Add and subtract one from any number | Maths | Quizalize & Oak National Academy

Starter quiz

Which of these numbers are odd numbers?

9 ✓

6

7 ✓

8
Match the pairs of numbers that sum to 10

4

⇔

6 ✓

9

⇔

1 ✓

7

⇔

3 ✓

2

⇔

8 ✓
Which expressions do not sum to 10?

4 + 6

7 + 4 ✓

6 + 5 ✓

1 + 9
Use your number pairs to solve the subtraction equations.

10 - 4 =

⇔

6 ✓

10 - 7 =

⇔

3 ✓

10 - 2 =

⇔

8 ✓

10 - 5 =

⇔

5 ✓
10 is the whole. 4 is the subtrahend. What is the difference?

'6' ✓
Use the image to find the missing subtrahend. 10 - ______ = 3

'7' ✓

Exit quiz

Match the equation to the total.

One more than 4 is

⇔

5 ✓

One more than 7 is

⇔

8 ✓

One more than 5 is

⇔

6 ✓

One more than 9 is

⇔

10 ✓
The picture shows 6 pencils and one more. Which equation matches the picture?

6 - 1 = 5

6 + 1 = 7 ✓

6 + 1 = 5
What equation is shown on the number line?

7 + 1 = 8

7 - 1 = 8

8 - 1 = 7 ✓
Match the parts of the sentence.

Adding one gives

⇔

one more ✓

Subtracting one gives

⇔

one less ✓
Match the equation to the answer.

One less than 4 is

⇔

3 ✓

One less than 7 is

⇔

6 ✓

One less than 8 is

⇔

7 ✓

One less than 10 is

⇔

9 ✓
There are 8 flowers in the garden. 1 flower is pink. How many flowers are not pink?

'7' ✓

Worksheet

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Presentation

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Video

Lesson Details

Key learning points

Adding one gives one more.
Subtracting one gives one less.

Common misconception

Children may struggle to count on from, or back from, a given number.

Encourage automaticity with the counting sequence through regular practice. At times, pause so that children need to predict the number that is one more/less. Initially, you may need to model silently counting from one through to the given number.

Keywords

One more - The number after a given number is one more than it.
One less - The number before a given number is one less than it