# Exploring strategies to add three 1-digit numbers

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## Lesson details

### Key learning points

1. In this lesson, we will be apply our knowledge of strategies such as number bonds to 10 and 20, doubles and near doubles to add three 1-digit numbers.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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## Worksheet

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## Starter quiz

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### 4 Questions

Q1.
What number fact will help us to solve 51 + 43?
1 + 4 = 5
10 + 40 = 50
5 + 3 = 8
Correct answer: 5 + 4 = 9
Q2.
What number fact will help us to solve 69 - 25?
Correct answer: 6 - 2 = 4
6 - 5 = 1
6 + 2 = 8
9 - 2 = 7
Q3.
What is 45 + 13?
32
55
67
Q4.
Thirty Two add Twenty Seven is equal to _______
Fifty Eight
Fifty Seven
Fifty Two

## Exit quiz

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### 5 Questions

Q1.
3 + 2 + 4 = _____
5
7
8
Q2.
4 + 6 + 2 = _____
10
11
8
Q3.
5 + 6 + 4 = _____
11
14
16
Q4.
Eleven
Nine
Thirteen