MA.3.AR.2.1, MA.3.AR.2.2, & MA.3.AR.2.3

Answer explanation

The division problem 12 ÷ 3 asks how many times 3 fits into 12. This can be restated as a missing factor problem: 3 times what number equals 12, which is represented as 3 × ? = 12.

• True

• False

Answer explanation

The equation 4 times 5 equals 20 is mathematically correct, as multiplying 4 by 5 results in 20. Therefore, the statement is true.

• 5

• 6

• 7

• 8

Answer explanation

To find the unknown number, divide 42 by 6. This gives 42 ÷ 6 = 7. Therefore, the unknown number is 7, which is the correct answer.

Answer explanation

The division problem 15 ÷ 5 can be restated as a missing factor problem by expressing it in multiplication form. Since 5 times what number equals 15, the correct choice is 5 × ? = 15.

• True

• False

Answer explanation

The equation 9 ÷ 3 equals 3, not 4. Therefore, the statement is false.

• 64

• 72

• 81

• 90

Answer explanation

To find the unknown number, calculate 8 times 9. Performing the multiplication: 8 × 9 = 72. Therefore, the correct answer is 72.

Answer explanation

The division problem 20 ÷ 4 can be restated as a missing factor problem by expressing it in multiplication form. Since 4 is the divisor, we can write it as 4 × ? = 20, where ? is the missing factor.

• True

• False

Answer explanation

The equation 7 times 3 equals 21 is mathematically correct. Therefore, the statement is true.

• 10

• 15

• 20

• 25

Answer explanation

To find the unknown number, multiply 3 by 5. Thus, ? = 3 × 5 = 15. Therefore, the correct answer is 15.

Answer explanation

The division problem 18 ÷ 6 asks how many times 6 fits into 18. This can be restated as a missing factor problem: 6 times what number equals 18, which is represented as 6 × ? = 18.