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

Presentation

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