Year 4 Understand what happens when a number is multiplied or divided by 10 and 100 worksheet

“Multiples of 10” is free to print, with no account. It is the first sheet in the Year 4 maths unit “Understand what happens when a number is multiplied or divided by 10 and 100”, for children aged 8 to 9, and takes about 20 minutes.

Print it on A4. The child's pages come first; the answers, and what each wrong answer tells you, are on the grown-up page that follows. Weeks 18 to 20 of the year, 15 sheets in the unit.

Free sample · answers on the last page

Multiples of 10

Name: ____________ · Date: ____________
Year 4 · Maths · about 20 minutes
Answers are on the grown-up page

Today I can multiply a number by 10 and spot multiples of 10 by their zero.

A Look back3 min

1.
3 × 4 =
2.
40, 50, 60,
3.
2,450 2,540

B Watch me, then you4 min

A pack holds 10 pencils. Mia has 6 packs. How many pencils is that?

A plain wooden shop counter with a small bell on top

Watch me

One pack holds 10 pencils.

6 packs hold 6 tens, which is 60.

6 × 10 = 60, and the ones digit is 0.

Now you

1.
Ola has 4 packs. Each pack holds 10 pencils. 4 × 10 =

C Your turn5 min

1.
2 packs of 10 pencils. 2 × 10 =
2.
5 packs of 10 pencils. 5 × 10 =
3.
8 packs of 10 pencils. 8 × 10 =
4.
10 packs of 10 pencils. 10 × 10 =

Say it out loud: What happens to the 8 when you multiply it by 10? Which column does it move into?

D Spot the mistake2 min

Priya says: “7 × 10 is 17, because 10 more than 7 is 17.”

1.
What is 7 × 10 really?

E Think deeper4 min

1.
Write every multiple of 10 from 55 to 105. Then tell your grown-up how you know.

How did it feel?

I can do it Nearly Not yet

For the grown-up

Multiples of 10 · 2 minutes to read

Answers, and what a wrong one tells you

A

1. 12

2. 70

3. <

B

1. 40 If your child writes 14, they added 10 to 4. Ask how many tens there are in 4 packs.

C

1. 20 If your child writes 12, they added 10 to 2. Each pack is worth 10, so 2 packs make 2 tens.

2. 50

3. 80

4. 100 If your child writes 20, they added 10 to 10 instead of multiplying. 10 packs hold 10 tens, which is 100, and the ones digit is 0.

D

1. 70 your child may have added 10 to 7. 7 + 10 is 17. Multiplying by 10 makes 7 tens, which is 70.

E

1. 60, 70, 80, 90, 100. Each one has a zero in the ones column. If your child misses one out, count up in tens from 60 and check the ones digit of each number.

Words to use

Say“Each pack is 10, so count the tens first. Then look for the zero.”

Instead of“Just add a zero on the end, that's the rule.”

After the sheet

Put 5 small piles of 10 buttons or dried pasta pieces together. Count the piles, then say the total and check it ends in zero.

Tick what your child got right in StudyDen. Anything missed comes back in a later Look back box, so there's no need to redo the sheet.

The rest of this unit

14 more sheets come with a StudyDen plan, in teaching order:

Ten times the size(with a plan)
The placeholder zero(with a plan)
Shrinking by ten(with a plan)
Why the zero goes(with a plan)
Multiplying by 100(with a plan)
Zeros that hold the place(with a plan)
Where the zeros go(with a plan)
Ten times ten(with a plan)
Ten times one factor(with a plan)
Ten times the dividend(with a plan)
Hidden times tables(with a plan)
Scaling the dividend(with a plan)
Scaling Facts by 100(with a plan)
Scaling division facts(with a plan)

Every Year 4 maths worksheet

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