1.
An even number plus an odd number is always an odd number.
Correct Answer
A. True
Explanation
When an even number is added to an odd number, the sum will always have an odd number of units. This is because even numbers can be represented as 2n, where n is an integer, and odd numbers can be represented as 2n+1. When we add these two representations, we get (2n) + (2n+1) = 4n+1, which is always an odd number. Therefore, the statement is true.
2.
An odd number minus an even number is always an even number.
Correct Answer
B. False
Explanation
When an odd number is subtracted from an even number, the result can be either an even number or an odd number. This is because subtracting an odd number from an even number can result in a difference that is either an even number (if the odd number is smaller) or an odd number (if the odd number is larger). Therefore, the statement that an odd number minus an even number is always an even number is false.
3.
2378 + 1321 =
Correct Answer
D. 3699
Explanation
The correct answer is 3699 because when you add 2378 and 1321 together, you get a sum of 3699.
4.
1876 + 8 =
Correct Answer
B. 1884
Explanation
The correct answer is 1884 because when we add 8 to 1876, we get 1884.
5.
516 + 29 =
Correct Answer
A. 545
Explanation
The sum of 516 and 29 is 545.
6.
395 - 142 =
Correct Answer
D. 253
Explanation
The correct answer is 253. This is because when we subtract 142 from 395, we get 253.
7.
2342 - 331 =
Correct Answer
A. 2011
Explanation
The correct answer is 2011. This can be determined by subtracting 331 from 2342. When subtracting, we start from the rightmost digit and work our way to the left. 2 minus 1 is 1, 3 minus 3 is 0, and 2 minus 0 is 2. Therefore, the result is 2011.
8.
507 - 63 =
Correct Answer
A. 444
Explanation
The correct answer is 444 because when subtracting 63 from 507, we subtract the ones place first, resulting in 7 - 3 = 4. Then we subtract the tens place, resulting in 0 - 6. Since we cannot subtract 6 from 0, we borrow from the hundreds place, resulting in 10 - 6 = 4. Therefore, the final answer is 444.
9.
5419 - 170 =
Correct Answer
C. 5249
Explanation
The given question asks for the result of subtracting 170 from 5419. To find the answer, we subtract 170 from 5419, which gives us 5249. Therefore, the correct answer is 5249.
10.
1090 - 805 =
Correct Answer
D. 285
Explanation
The correct answer is 285 because when you subtract 805 from 1090, you get 285.
11.
521 x 24 =
Correct Answer
C. 12504
Explanation
The correct answer is 12504. To find the product of 521 and 24, we multiply the two numbers together. 521 multiplied by 20 is 10420, and 521 multiplied by 4 is 2084. Adding these two products together, we get 12504. Therefore, the answer is 12504.
12.
150 x 3 =
Correct Answer
E. None of these
13.
240 x 32 =
Correct Answer
E. None of these
Explanation
None of these because 240x32 is 7680
14.
96 x 57 =
Correct Answer
B. 5472
Explanation
The correct answer is 5472 because when you multiply 96 by 57, you get the product of 5472.
15.
203 x 4 =
Correct Answer
A. 812
Explanation
The given question asks to find the product of 203 and 4. The correct answer is 812, which is obtained by multiplying 203 by 4.
16.
294 ÷ 7 =
Correct Answer
B. 42
Explanation
The correct answer is 42 because when you divide 294 by 7, you get 42 as the quotient. There is no remainder or fraction, so the answer is a whole number.
17.
6000 ÷ 4 =
Correct Answer
D. 1500
Explanation
The correct answer is 1500 because when you divide 6000 by 4, you are essentially splitting 6000 into 4 equal parts. Each part would be 1500, so the result is 1500.
18.
9021 ÷ 3 =
Correct Answer
C. 3007
Explanation
To find the quotient of 9021 divided by 3, we divide the first digit of the dividend (9) by the divisor (3), which gives us 3. We then multiply the quotient (3) by the divisor (3) to get 9, and subtract it from the first two digits of the dividend (90 - 9 = 81). We bring down the next digit (2) and repeat the process. 81 divided by 3 is 27, so we have 27 as the next digit of the quotient. We continue this process until we have divided all the digits of the dividend. The final quotient is 3007.
19.
184 ÷ 20 =
Correct Answer
C. 9 R 4
Explanation
The given division problem is 184 ÷ 20. When we divide 184 by 20, we get a quotient of 9 and a remainder of 4. This means that 20 can be divided into 184 exactly 9 times with a remainder of 4. Therefore, the correct answer is "9 R 4".
20.
306 ÷ 30 =
Correct Answer
E. None of these
Explanation
The correct answer is None of these because 306 divided by 30 is not equal to any of the given options. The quotient of 306 divided by 30 is 10.2, which is not equal to 12, 102, 101, 192, or any other option provided.