To subtract by counting back using a number line

To subtract by counting back using a number line

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Lesson details

Key learning points

  1. In this lesson, we will learn how to use 'first, then, now' stories to subtract by counting back, using a number line.

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3 Questions

Q1.
13 + 1 =
12
Correct answer: 14
15
Q2.
17 + 2 =
18
Correct answer: 19
20
Q3.
9 + 3 =
Correct answer: 12
13
19

3 Questions

Q1.
13 - 1 =
Correct answer: 12
14
15
Q2.
17 - 2 =
Correct answer: 15
19
20
Q3.
9 - 3 =
12
13
Correct answer: 6

Lesson appears in

UnitMaths / Addition and subtraction within 20