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Explanation The number 3976 can be written in expanded notation as 3000 + 900 + 70 + 6. This means that the number is composed of 3000 thousands, 900 hundreds, 70 tens, and 6 ones.
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6.
Write this number in expanded notation:
5207
Explanation The given correct answer for this question is 5000 + 200 + 7. This is the expanded notation of the number 5207, where the number is broken down into its place values. 5000 represents the value in the thousands place, 200 represents the value in the hundreds place, and 7 represents the value in the ones place.
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7.
Round off this number to the nearest ten:
24
Explanation When rounding off a number to the nearest ten, we look at the digit in the ones place. If it is less than 5, we round down to the previous ten, which in this case is 20.
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8.
Round off this number to the nearest ten:
36
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If it is 5 or greater, we round up, and if it is less than 5, we round down. In this case, the digit in the ones place is 6, which is greater than 5. Therefore, we round up to the nearest ten, which is 40.
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9.
Round off this number to the nearest ten:
63
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If it is 0-4, we round down to the nearest ten. If it is 5-9, we round up to the nearest ten. In this case, the digit in the ones place is 3, which is less than 5. Therefore, we round down to the nearest ten, which is 60.
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10.
Round off this number to the nearest ten:
47
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If it is 5 or greater, we round up to the next ten. In this case, the digit in the ones place is 7, which is greater than 5. Therefore, we round up to the next ten, which is 50.
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11.
Round off this number to the nearest ten:
92
Explanation The number 92 is rounded off to the nearest ten, which means we need to find the multiple of ten that is closest to 92. In this case, the closest multiple of ten is 90, which is 2 units away from 92. Therefore, 92 is rounded off to 90.
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12.
Round off this number to the nearest ten:
44
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If it is 0-4, we round down to the nearest ten. If it is 5-9, we round up to the nearest ten. In this case, the digit in the ones place is 4, which is less than 5. Therefore, we round down to the nearest ten, which is 40.
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13.
Round off this number to the nearest ten:
52
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If it is 5 or greater, we round up by increasing the tens place by 1. In this case, the digit in the ones place is 2, which is less than 5. Therefore, we do not round up and the number remains the same. Thus, rounding off 52 to the nearest ten gives us 50.
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14.
Round off this number to the nearest ten:
59
Explanation The number 59 is rounded off to the nearest ten, which is 60.
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15.
Round off this number to the nearest ten:
67
Explanation The number 67 is being rounded off to the nearest ten, which means we need to find the closest multiple of ten to 67. In this case, the closest multiple of ten is 70. Therefore, the correct answer is 70.
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16.
Round off this number to the nearest ten:
81
Explanation To round off a number to the nearest ten, we look at the digit in the units place. If the digit is 5 or greater, we round up, and if it is less than 5, we round down. In this case, the digit in the units place is 1, which is less than 5. Therefore, we round down to the nearest ten, which is 80.
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17.
Round off this number to the nearest ten:
28
18.
Round off this number to the nearest ten:
85
Explanation The number 85 is being rounded off to the nearest ten. Since 85 is closer to 90 than to 80, it is rounded up to 90.
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19.
Round off this number to the nearest ten:
96
Explanation To round off the number 96 to the nearest ten, we look at the digit in the ones place, which is 6. Since 6 is greater than or equal to 5, we round up the tens digit, which is 9, to the next higher number, which is 10. Therefore, rounding off 96 to the nearest ten gives us 100.
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20.
Round off this number to the nearest ten:
33
21.
Round off this number to the nearest ten:
147
Explanation The number 147 is being rounded off to the nearest ten. In this case, since 147 is closer to 150 than it is to 140, the number is rounded up to 150.
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22.
Round off this number to the nearest ten:
168
Explanation The given number, 168, is rounded off to the nearest ten, which means we need to look at the digit in the ones place. Since the digit is 8, which is greater than or equal to 5, we round up the tens place. Therefore, the rounded off number is 170.
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23.
Round off this number to the nearest ten:
139
24.
Round off this number to the nearest ten:
268
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If it is 5 or greater, we round up by adding 1 to the tens place. In this case, the digit in the ones place is 8, which is greater than 5. Therefore, we round up to the next ten, which is 270.
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25.
Round off this number to the nearest ten:
202
Explanation The number 202 is rounded off to the nearest ten by considering the digit in the tens place. Since the digit in the ones place is less than 5, we round down the tens digit to 0. Therefore, the rounded off number is 200.
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26.
Round off this number to the nearest ten:
283
Explanation The number 283 is rounded off to the nearest ten which is 280.
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27.
Round off this number to the nearest ten:
394
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If the digit is 0-4, we round down, and if it is 5-9, we round up. In this case, the digit in the ones place is 4, which is less than 5. Therefore, we round down to the nearest ten, which is 390.
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28.
Round off this number to the nearest ten:
315
Explanation The number 315 is rounded off to the nearest ten, which means it is rounded to the nearest multiple of 10. Since 315 is closer to 320 than it is to 310, it is rounded up to 320.
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29.
Round off this number to the nearest ten:
3028
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If the digit is 5 or greater, we round up to the next ten. In this case, the digit in the ones place is 8, which is greater than 5. Therefore, we round up to the next ten, which is 3030.
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30.
Round off this number to the nearest ten:
2489
Explanation To round off a number to the nearest ten, we look at the digit in the ones place. If it is 5 or greater, we increase the tens place by 1. In this case, the digit in the ones place is 9, which is greater than 5. Therefore, we increase the tens place by 1, resulting in the rounded number of 2490.
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31.
Write the numeral for:
eight hundred and forty-three
Explanation The given question asks for the numeral representation of "eight hundred and forty-three." The correct answer is 843, which is the numerical representation of the written phrase.
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32.
Write the numeral for:
one thousand, six hundred and thirty-nine
33.
Write the numeral for:
six thousand, four hundred and seven
34.
Which number is the smaller?
A.
978
B.
987
Correct Answer
A. 978
Explanation In the given question, we are asked to determine which number is smaller between 978 and 987. By comparing the digits from left to right, we can see that the first digit in both numbers is the same. Moving to the second digit, we find that 7 is smaller than 8. Therefore, the number 978 is smaller than 987.
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35.
Which number is the smaller?
A.
1406
B.
1046
Correct Answer
B. 1046
Explanation In order to determine which number is smaller, we compare the digits from left to right. Starting with the thousands place, we see that both numbers have a 1, so we move on to the hundreds place. Here, 1 is smaller than 4, so we can conclude that 1046 is the smaller number.
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36.
Which number is the smaller?
A.
7352
B.
7325
Correct Answer
B. 7325
Explanation The number 7325 is smaller than 7352 because when comparing numbers, we start from the leftmost digit and move towards the right. The first digit of both numbers is the same, but the second digit of 7325 is smaller than the second digit of 7352. Therefore, 7325 is the smaller number.
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37.
Which number is the largest?
A.
2168
B.
1397
Correct Answer
A. 2168
Explanation 2168 is the largest number because it has the highest value among the given options.
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38.
Which group is arranged from smallest to largest?
A.
964, 728, 875
B.
964, 875, 728
C.
728, 875, 964
D.
728, 964, 875
Correct Answer
C. 728, 875, 964
Explanation The numbers in the group are arranged in ascending order from smallest to largest. The first number, 728, is the smallest, followed by 875, and finally 964, which is the largest number in the group.
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39.
Which group is arranged from smallest to largest?
A.
1962, 1537, 1491
B.
1491, 1537, 1962
C.
1491, 1962, 1537
D.
1537, 1491, 1962
Correct Answer
B. 1491, 1537, 1962
Explanation The group is arranged from smallest to largest because 1491 is the smallest number, followed by 1537, and finally 1962, which is the largest number in the group.
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40.
Which group is arranged from smallest to largest?
A.
4597, 4795, 4759
B.
4597, 4759, 4795
C.
4759, 4795, 4597
D.
4759, 4797, 4795
Correct Answer
B. 4597, 4759, 4795
Explanation The numbers in each group are being arranged in ascending order. In the first group, 4597 is the smallest, followed by 4759, and then 4795 which is the largest. Therefore, the group arranged from smallest to largest is 4597, 4759, 4795.
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41.
What is the place value of the 5 in the numeral: 1356
(write - tens, hundreds, thousands or ones as your answer)
Correct Answer tens 10
Explanation The place value of a digit in a numeral determines its position and its worth. In the given numeral 1356, the 5 is in the tens place. This means that the value of the 5 is ten times greater than if it were in the ones place. Therefore, the correct answer is "tens" with a value of 10.
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42.
What is the place value of the 5 in the numeral: 2,574
(write - tens, hundreds, thousands or ones as your answer)
Correct Answer hundreds 100
Explanation The place value of a digit in a number determines its position and worth. In the given numeral 2,574, the digit 5 is in the hundreds place, meaning it represents a value of 100.
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43.
What is the place value of the 5 in the numeral: 5,642
(write - tens, hundreds, thousands or ones as your answer)
Correct Answer thousands 1000
Explanation The place value of a digit in a numeral refers to the position of that digit within the number. In the given numeral 5,642, the digit 5 is in the thousands place, which means it represents a quantity of thousands. The digit 5 is not in the tens, hundreds, or ones place, so those options can be eliminated. Therefore, the correct answer is thousands. Additionally, the value of the digit 5 in the thousands place is 1000.
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44.
Type the number for:
Correct Answer 822
45.
Type the number for:
Correct Answer 489
46.
Type the number for:
Correct Answer 1333 1334 1,333 1,334 1 333 1 334
47.
Type the number for:
Correct Answer 1521 1,521 1 521
Explanation The given options represent the number 1521 in different formats. The number can be written as "1521" without any spaces or commas, or as "1,521" with a comma separating the thousands place. It can also be written as "1 521" with a space separating the thousands place. Therefore, all of the options provided are valid representations of the number 1521.
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48.
Type the answer (use the worksheet to do you calculations):
44
+51
Correct Answer 95
Explanation The given question is an addition problem. When we add 44 and 51, we get the sum of 95. Therefore, the answer is 95.
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49.
Type the answer (use the worksheet to do you calculations):
37
+452
Correct Answer 489
Explanation The answer 489 is obtained by adding the digits in each column from right to left. In the ones column, 7 plus 2 equals 9. In the tens column, 3 plus 5 equals 8. In the hundreds column, 4 plus nothing equals 4. Therefore, the sum of 37 and 452 is 489.
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50.
Type the answer (use the worksheet to do you calculations):
1491
+204
Correct Answer 1695
Explanation The given question is an addition problem. When we add 1491 and 204, we get the sum of 1695. Therefore, the answer is 1695.
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