Year 2 Adding and subtracting ones and tens to and from 2-digit numbers worksheet

“One More, One Less” is free to print, with no account. It is the first sheet in the Year 2 maths unit “Adding and subtracting ones and tens to and from 2-digit numbers”, for children aged 6 to 7, 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 9 to 11 of the year, 15 sheets in the unit.

Free sample · answers on the last page

One More, One Less

Name: ____________ · Date: ____________
Year 2 · Maths · about 20 minutes
Answers are on the grown-up page

Today I can find one more and one less than a two-digit number.

A Look back3 min

1.
3 tens and 4 ones make
2.
6 tens is
3.
Count on in tens from 46: 46, 56,

B Watch me, then you4 min

Watch me

26 sits right next to 25 on the line.

One more than 25 is 26.

25 + 1 = 26.

Now you

1.
One more than 67 is

C Your turn5 min

1.
42 + 1 =
2.
47 − 1 =
3.
One more than 63 is
4.
One less than 91 is

Say it out loud: What stayed the same in every row, and what changed?

D Spot the mistake3 min

Kit says: “55 is one more than 56.”

1.
55 is one more than

E Think deeper3 min

1.
Write every number from 30 to 39 that is one more than a multiple of 5. Explain how you know.

How did it feel?

I can do it Nearly Not yet

For the grown-up

One More, One Less · 2 minutes to read

Answers, and what a wrong one tells you

A

1. 34

2. 60

3. 66

B

1. 68 If your child writes 66, they took one away. One more means the next number along, so add 1.

C

1. 43 If your child writes 41, they took one away. Adding 1 moves one step forward, to the next number.

2. 46 If your child writes 48, they added 1 instead. Taking away 1 moves one step back, to the number before.

3. 64

4. 90 If your child writes 92, they added 1. One less is the number just before, so take 1 away.

D

1. 54 If your child writes 56, they added 1. Here 55 is the bigger number. One more than 54 is 55, so the answer is 54. Point to 55 and step back once.

E

1. 31 and 36, because 30 + 1 = 31 and 35 + 1 = 36. If your child only lists multiples of 5, ask what one more than each one is. Then write that number instead.

Words to use

Say“What number sits right next to it? Step forward or back once.”

Instead of“Tell them the answer straight away.”

After the sheet

Make 34 with buttons in piles of ten and loose ones. Add one and say '34 add 1 is 35'. Then take one away and say it again.

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:

Crossing the tens line(with a plan)
Small facts, big numbers(with a plan)
Facts that unlock sums(with a plan)
Facts That Solve Problems(with a plan)
Number bond shortcuts(with a plan)
Bridging to the next ten(with a plan)
Subtract by bridging(with a plan)
Bridging Story Sums(with a plan)
Ten more, ten less(with a plan)
Adding and taking away 10(with a plan)
Add Tens, Keep Ones(with a plan)
Taking away tens(with a plan)
Splitting numbers in new ways(with a plan)
Quick ways to solve(with a plan)

Every Year 2 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.