Using the Make 10 strategy to subtract ones

Using the Make 10 strategy to subtract ones

Lesson details

Key learning points

  1. In this lesson, we will learn how to use the "Make 10" Strategy to help us subtract ones from 2 digit numbers.

Licence

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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3 Questions

Q1.
Solve the following equation by partitioning 1 number: 26+15=
31
35
Correct answer: 41
Q2.
Solve the following equation by partitioning both numbers: 49+25=
64
Correct answer: 74
75
Q3.
Solve the following equation by using any strategy you think makes sense: 28+15=
38
Correct answer: 43
44

3 Questions

Q1.
Do you need to use the "Make 10" strategy for the following equation? 13-3=?
Correct answer: No
Yes
Q2.
What known fact can help you solve the following equation? 15-4=?
15-5-10
5-1=4
Correct answer: 5-4=1
Q3.
Solve the following equation using the "Make 10" strategy: 33-5=?
27
Correct answer: 28
30

Lesson appears in

UnitMaths / Addition and subtraction of 2-digit numbers (regrouping and adjusting)