Year 1 Composition of numbers 11 to 19 worksheet

“Ten and some ones” is free to print, with no account. It is the first sheet in the Year 1 maths unit “Composition of numbers 11 to 19”, for children aged 5 to 6, 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 25 to 26 of the year, 10 sheets in the unit.

Free sample · answers on the last page

Ten and some ones

Name: ____________ · Date: ____________
Year 1 · Maths · about 20 minutes
Answers are on the grown-up page

Today I can see that a teen number is one ten and some ones, like 14.

A Look back3 min

1.
What is 1 more than 9?
2.
How many more than 6 make 10?
3.
5 + 3 =

B Watch me, then you4 min

Ami has 14 cubes. Look for the full ten first, then count the extra ones.

A wooden kitchen table with a pot standing on it beside a sunny window

Watch me

1 ten is 10.

There are 4 more ones.

10 and 4 make 14.

Now you

1.
1 ten and 7 ones make

C Your turn6 min

Count the ten first. Then count the ones.

1.
How many blocks?
2.
How many blocks?
3.
How many blocks?
4.
How many counters?

Say it out loud: What is the same about the first digit in every teen number?

D Spot the mistake3 min

Ami says: “1 ten and 8 ones make 80.”

1.
Write the teen number for 1 ten and 8 ones.

E Think deeper4 min

1.
Which teen numbers have 5 or more ones? Write them all.

How did it feel?

I can do it Nearly Not yet

For the grown-up

Ten and some ones · 2 minutes to read

Answers, and what a wrong one tells you

A

1. 10

2. 4

3. 8

B

1. 17 If your child writes 71, the digits have swapped places. 71 is 7 tens and 1 one. Point to the 1 and say: one ten.

C

1. 12

2. 15 If your child writes 51, the digits are backwards. Point to the ten rod and say: one ten, not five.

3. 19

4. 16

D

1. 18 If your child writes 80, they heard eighty, not eighteen. 80 is 8 tens and no ones. Point to the ten rod and say: one ten and 8 ones.

E

1. 15, 16, 17, 18 and 19 If your child stops at 15, count on from 15. Check the ones in each teen number.

Words to use

Say“Find the ten first, then count the ones.”

Instead of“Just read the number out loud and move on.”

After the sheet

Put 10 buttons in a cup and add a few more beside it. Say: one ten and ___ ones makes ___.

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

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

Where the teen numbers live(with a plan)
Teen numbers and tens(with a plan)
10 and a Bit Puzzles(with a plan)
Take away using 10(with a plan)
Odd and even numbers(with a plan)
Doubles and Halves(with a plan)
Adding with Known Facts(with a plan)
Hidden small facts(with a plan)
Use what you know(with a plan)

Every Year 1 maths worksheet

The worksheets plan opens a printable sheet for every lesson in Years 1 to 6, each with its answers on a separate page for you. It costs £6.99 a month or £59 a year for the whole family, with no free trial.

The full StudyDen plan adds the lessons themselves, marked as your child works, with the worksheets included. It is 7 days free, then £29.99 a month.

Get the worksheets Try the full plan free

Both start with a free account; you choose the plan when you sign up.