Subtracting 2 digit numbers involving regrouping

Subtracting 2 digit numbers involving regrouping

Lesson details

Key learning points

  1. In this lesson, we will learn how to subtract two digit numbers by using dienes cubes to represent our mental calculations.

Licence

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3 Questions

Q1.
In the following equation, how can you partition the 4 in order to use the "Make 10" strategy? 61-4=57
Correct answer: 1 and 3
1 and 4
2 and 2
Q2.
Solve the following equation: 27-8=?
1
Correct answer: 19
20
Q3.
Solve the following equation: 53-6=?
Correct answer: 47
50
56

3 Questions

Q1.
Solve the following equation mentally: 18-10=?
0
10
Correct answer: 8
Q2.
Solve the following by using a whole part model and the "Make 10" strategy. 32-15=?
15
Correct answer: 17
22
Q3.
Solve the following equation by using a whole part model and the "Make 10" strategy. 45-16=?
28
Correct answer: 29
35

Lesson appears in

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