Dividing by One Digit

Share the biggest units first.

10 problems · about 15 minutes · 4.NBT.B.6

What this lesson teaches

The child divides a multi-digit number by a one-digit number using place value.

From earlier lessons. Loosen up before the new work.

3 problems

Review — Estimating Products: Estimate 38 × 21 to the nearest ten.
Answer 800
Why 40 × 20 = 800.
Review — Two-Digit by Two-Digit: 24 × 13 = ?
Answer 312
Why 24 × 13 = 312.
Review — The Area Model and Partial Products: 42 × 8 = ?
Answer 336
Why 40 × 8 = 320, and 2 × 8 = 16.

Straightforward practice. Get the method working first.

3 problems

738 ÷ 6 = ?
Answer 123
Why 738 ÷ 6 = 123.
Which units do you share first?
Answer The biggest ones.
Why Sharing from the biggest unit lets leftovers flow downward.
672 ÷ 3 = ?
Answer 224
Why 6 hundreds share evenly.

The same ideas with more to keep track of.

1 problem

Mixed problems. Work out what kind of question it is before you start.

3 problems

954 ÷ 6 = ?
Answer 159
Why 9 hundreds among 6.
The Share Out: 936 stickers shared equally among 4 children. How many each?
Answer 234 stickers
Why 936 ÷ 4 = 234.
The Boxes: 855 pens go equally into 5 boxes. How many per box?
Answer 171 pens
Why 855 ÷ 5 = 171.