# Spectrum Math Grade 4 Chapter 5 Lesson 2 Answer Key Dividing through 45 ÷ 5

This handy Spectrum Math Grade 4 Answer Key Chapter 5 Lesson 5.2 Dividing through 45 ÷ 5 provides detailed answers for the workbook questions.

## Spectrum Math Grade 4 Chapter 5 Lesson 5.2 Dividing through 45 ÷ 5 Answers Key

If 45 ÷ 5 = 9, then 5 × 9 = 45 must be true.
Using the division table, find 45 in the 5 column. The quotient is named at the beginning of the row.

Divide.

Question 1.
a.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 35 is divisible by 5, as we know that 5 × 7 = 35 so, we go for it.
Step 3: Write 7 in the quotient.
Check:
If 35 ÷ 5 = 7, then 5 × 7 = 35 must be true.

b.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 16 is divisible by 4, as we know that 4 × 4 = 16 so, we go for it.
Step 3: Write 4 in the quotient.
Check:
If 16 ÷ 4 = 4, then 4 × 4 = 16 must be true.

c.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 36 is divisible by 4, as we know that 4 × 9 = 36 so, we go for it.
Step 3: Write 9 in the quotient.
Check:
If 36 ÷ 4 = 9, then 4 × 9 = 36 must be true.

d.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 18 is divisible by 3, as we know that 3 × 6 = 18 so, we go for it.
Step 3: Write 6 in the quotient.
Check:
If 18 ÷ 3 = 6, then 3 × 6 = 18 must be true.

e.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 25 is divisible by 5, as we know that 5 × 5 = 25 so, we go for it.
Step 3: Write 5 in the quotient.
Check:
If 25 ÷ 5 = 5, then 5 × 5 = 25 must be true.

f.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 28 is divisible by 4, as we know that 4 × 7 = 28 so, we go for it.
Step 3: Write 7 in the quotient.
Check:
If 28 ÷ 4 = 7, then 4 × 7 = 28 must be true.

Question 2.
a.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 18 is divisible by 2, as we know that 2 × 9 = 18 so, we go for it.
Step 3: Write 9 in the quotient.
Check:
If 18 ÷ 2 = 9, then 2 × 9 = 18 must be true.

b.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 18 is divisible by 3, as we know that 3 × 6 = 18 so, we go for it.
Step 3: Write 6 in the quotient.
Check:
If 18 ÷ 3 = 6, then 3 × 6 = 18 must be true.

c.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 27 is divisible by 3, as we know that 3 × 9 = 27 so, we go for it.
Step 3: Write 9 in the quotient.
Check:
If 27 ÷ 3 = 9, then 3 × 9 = 27 must be true.

d.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 12 is divisible by 3, as we know that 3 × 4 = 12 so, we go for it.
Step 3: Write 4 in the quotient.
Check:
If 12 ÷ 3 = 4, then 3 × 4 = 12 must be true.

e.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 20 is divisible by 5, as we know that 5 × 4 = 20 so, we go for it.
Step 3: Write 4 in the quotient.
Check:
If 20 ÷ 5 = 4, then 5 × 4 = 20 must be true.

f.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 21 is divisible by 3, as we know that 3 × 7 = 21 so, we go for it.
Step 3: Write 7 in the quotient.
Check:
If 21 ÷ 3 = 7, then 3 × 7 = 21 must be true.

Question 3.
a.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 45 is divisible by 5, as we know that 5 × 9 = 45 so, we go for it.
Step 3: Write 9 in the quotient.
Check:
If 45 ÷ 5 = 9, then 5 × 9 = 45 must be true.

b.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 15 is divisible by 3, as we know that 3 × 5 = 15 so, we go for it.
Step 3: Write 5 in the quotient.
Check:
If 15 ÷ 3 = 5, then 3 × 5 = 15 must be true.

c.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 30 is divisible by 5, as we know that 5 × 6 = 30 so, we go for it.
Step 3: Write 6 in the quotient.
Check:
If 30 ÷ 5 = 6, then 5 × 6 = 30 must be true.

d.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 32 is divisible by 4, as we know that 4 × 8 = 32 so, we go for it.
Step 3: Write 8 in the quotient.
Check:
If 32 ÷ 4 = 8, then 4 × 8 = 32 must be true.

e.

Step 1: 2 is divisible by 8, as we know that 2 × 4 = 8 so, we go for it.
Step 2: Write 4 in the quotient.
Check:
If 8 ÷ 2 = 4, then 2 × 4 = 8 must be true.

f.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 10 is divisible by 2, as we know that 2 × 5 = 10 so, we go for it.
Step 3: Write 5 in the quotient.
Check:
If 10 ÷ 2 = 5, then 2 × 5 = 10 must be true.

Question 4.
a.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 16 is divisible by 2, as we know that 2 × 8 = 16 so, we go for it.
Step 3: Write 8 in the quotient.
Check:
If 16 ÷ 2 = 8, then 2 × 8 = 16 must be true.

b.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 12 is divisible by 2, as we know that 2 × 6 = 12 so, we go for it.
Step 3: Write 6 in the quotient.
Check:
If 12 ÷ 2 = 6, then 2 × 6 = 12 must be true.

c.

Step 1: 4 is divisible by 4, as we know that 4 × 1 = 4 so, we go for it.
Step 2: Write 1 in the quotient.
Check:
If 4 ÷ 4 = 1, then 4 × 1 = 4 must be true.

d.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 35 is divisible by 5, as we know that 5 × 7 = 35 so, we go for it.
Step 3: Write 7 in the quotient.
Check:
If 35 ÷ 5 = 7, then 5 × 7 = 35 must be true.

e.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 18 is divisible by 2, as we know that 2 × 9 = 18 so, we go for it.
Step 3: Write 9 in the quotient.
Check:
If 18 ÷ 2 = 9, then 2 × 9 = 18 must be true.

f.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 40 is divisible by 5, as we know that 5 × 8 = 40 so, we go for it.
Step 3: Write 8 in the quotient.
Check:
If 40 ÷ 5 = 8, then 5 × 8 = 40 must be true.

Question 5.
a.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 30 is divisible by 5, as we know that 5 × 6 = 30 so, we go for it.
Step 3: Write 6 in the quotient.
Check:
If 30 ÷ 5 = 6, then 5 × 6 = 30 must be true.

b.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 24 is divisible by 4, as we know that 4 × 6 = 24 so, we go for it.
Step 3: Write 6 in the quotient.
Check:
If 24 ÷ 4 = 6, then 4 × 6 = 24 must be true.

c.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 24 is divisible by 3, as we know that 3 × 8 = 24 so, we go for it.
Step 3: Write 8 in the quotient.
Check:
If 24 ÷ 3 = 8, then 3 × 8 = 24 must be true.

d.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 20 is divisible by 4, as we know that 4 × 5 = 20 so, we go for it.
Step 3: Write 5 in the quotient.
Check:
If 20 ÷ 4 = 5, then 4 × 5 = 20 must be true.

e.

Step 1: 9 is divisible by 3, as we know that 3 × 3 = 9 so, we go for it.
Step 2: Write 3 in the quotient.
Check:
If 9 ÷ 3 = 3, then 3 × 3 = 9 must be true.

f.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 12 is divisible by 4, as we know that 4 × 3 = 12 so, we go for it.
Step 3: Write 3 in the quotient.
Check:
If 12 ÷ 4 = 3, then 4 × 3 = 12 must be true.

Question 6.
a.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 14 is divisible by 2, as we know that 2 × 7 = 14 so, we go for it.
Step 3: Write 7 in the quotient.
Check:
If 14 ÷ 2 = 7, then 2 × 7 = 14 must be true.

b.

Step 1: 4 is divisible by 4, as we know that 4 × 1 = 4 so, we go for it.
Step 2: Write 1 in the quotient.
Check:
If 4 ÷ 4 = 1, then 4 × 1 = 4 must be true.

c.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 15 is divisible by 5, as we know that 5 × 3 = 15 so, we go for it.
Step 3: Write 3 in the quotient.
Check:
If 15 ÷ 5 = 3, then 5 × 3 = 15 must be true.

d.

Step 1: Since the first digit of the dividend is less than the divisor, bring down the next digit of the dividend. Now consider the first 2 digits to proceed with the division.
Step 2: 10 is divisible by 5, as we know that 5 × 2 = 10 so, we go for it.
Step 3: Write 2 in the quotient.
Check:
If 10 ÷ 5 = 2, then 5 × 2 = 10 must be true.

e.

Step 1: We know that, 4×0=0
Step 2: Write 0 in the quotient.
Check:
If 0 ÷ 4 = 0, then 4 × 0 = 0 must be true.

f.

Step 1: 6 is divisible by 3, as we know that 3 × 2 = 6 so, we go for it.
Step 2: Write 2 in the quotient.
Check:
If 6 ÷ 3 = 2, then 3 × 2 = 6 must be true.

Complete the following.

Question 7.
a.

Step 1: We know that 5 × 3 = 15. So, we go for it.
Step 2: Write 5 in the quotient.

b.

Step 1: We know that 4 × 7 = 28. So, we go for it.
Step 2: Write 4 in the quotient.

c.