Explanation:
We are using
repeated subtraction to solve division problems. That means we keep subtracting the divisor (the number we’re dividing by) from the dividend (the number we’re dividing) until we reach zero. The number of times we subtract is the answer — the quotient.
Let’s do each problem step by step.
---
Problem 1: 20 ÷ 5
Step 1: Start with 20. Subtract 5 repeatedly until you get to 0.
- 20 − 5 = 15
- 15 − 5 = 10
- 10 − 5 = 5
- 5 − 5 = 0
We subtracted 5 a total of
4 times, and we reached 0.
So, 20 ÷ 5 =
4.
Let’s fill in the boxes as shown:
First subtraction:
20 − 5 = 15 → top box: 5, middle box: 5, bottom box: 15
Second subtraction:
15 − 5 = 10 → top: 5, middle: 5, bottom: 10
Third subtraction:
10 − 5 = 5 → top: 5, middle: 5, bottom: 5
Fourth subtraction:
5 − 5 = 0 → top: 5, middle: 5, bottom: 0
So the blanks for the first problem are:
- Answer:
4
- Each subtraction uses 5, and results go: 15, 10, 5, 0
---
Problem 2: 15 ÷ 3
Start with 15. Subtract 3 repeatedly:
- 15 − 3 = 12
- 12 − 3 = 9
- 9 − 3 = 6
- 6 − 3 = 3
- 3 − 3 = 0
We subtracted 3 a total of
5 times.
So, 15 ÷ 3 =
5.
Filling the boxes:
- First: 15 − 3 = 12
- Second: 12 − 3 = 9
- Third: 9 − 3 = 6
- Fourth: 6 − 3 = 3
- Fifth: 3 − 3 = 0
Each time, subtract 3; results: 12, 9, 6, 3, 0.
Final answers:
1) 20 ÷ 5 = 4
2) 15 ÷ 3 = 5
Final Answer:
1) 4
2) 5
Parent Tip: Review the logic above to help your child master the concept of division using repeated subtraction worksheet.
