Sixth Grade Mathematics- Remember?

1) x-15 = ?

when x = 30

12

13

14

15

16

When x is equal to 30, we can substitute this value into the equation x-15. Therefore, 30-15 equals 15. Hence, the correct answer is 15.

Explanation

When x is equal to 30, we can substitute this value into the equation x-15. Therefore, 30-15 equals 15. Hence, the correct answer is 15.

2) You buy 30 gummy worms. You give 8 of them to your dad, 6 of them to your mom, 2 of them to your sister, 4 of them to your brother, & 1 for a friend. How many do you have left?

7

8

9

10

11

After distributing the gummy worms to your dad, mom, sister, brother, and friend, you have given away a total of 21 gummy worms. Therefore, to find out how many gummy worms you have left, you subtract the number of gummy worms given away from the total number of gummy worms bought. In this case, you bought 30 gummy worms, so subtracting 21 from 30 gives you 9 gummy worms left.

Explanation

After distributing the gummy worms to your dad, mom, sister, brother, and friend, you have given away a total of 21 gummy worms. Therefore, to find out how many gummy worms you have left, you subtract the number of gummy worms given away from the total number of gummy worms bought. In this case, you bought 30 gummy worms, so subtracting 21 from 30 gives you 9 gummy worms left.

3) Simplify the fraction.
6/10

1/5

2/5

3/5

4/5

5/5

To simplify the fraction 6/10, we can divide both the numerator and denominator by their greatest common divisor, which is 2. Dividing 6 by 2 gives us 3, and dividing 10 by 2 gives us 5. Therefore, the simplified form of 6/10 is 3/5.

Explanation

To simplify the fraction 6/10, we can divide both the numerator and denominator by their greatest common divisor, which is 2. Dividing 6 by 2 gives us 3, and dividing 10 by 2 gives us 5. Therefore, the simplified form of 6/10 is 3/5.

4) You have $70.00 to spend. You buy a pair of jeans for $10.00, a shirt for $7.00, a sweater for $15.00, & a pair of shoes for $32.00. How much do you have left?

$6.00

$8.00

$2.50

$7.20

After buying the pair of jeans for $10.00, the shirt for $7.00, the sweater for $15.00, and the pair of shoes for $32.00, the total amount spent would be $64.00. If you started with $70.00, subtracting the total spent from the initial amount would give you $6.00 left.

Explanation

After buying the pair of jeans for $10.00, the shirt for $7.00, the sweater for $15.00, and the pair of shoes for $32.00, the total amount spent would be $64.00. If you started with $70.00, subtracting the total spent from the initial amount would give you $6.00 left.

5) What is the GCF [greatest common factor] of 24 & 18?

4

8

6

10

2

The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. In this case, the factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24, while the factors of 18 are 1, 2, 3, 6, 9, and 18. The largest number that appears in both lists is 6, so the GCF of 24 and 18 is 6.

Explanation

The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. In this case, the factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24, while the factors of 18 are 1, 2, 3, 6, 9, and 18. The largest number that appears in both lists is 6, so the GCF of 24 and 18 is 6.