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Lesson details

Key learning points

  1. In this lesson, we will learn how to solve addition and subtraction word problems with the help of bar models.

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.
What calculation is need to solve the following word problem: Sally bought used 13 bricks yesterday. Today she she used another 27. How many bricks did she use altogether?
13+13
27-13
Correct answer: 27+13
Q2.
Solve the following word problem: Rebecca has 32 shirts in her wardrobe. She gives away 16. How many shirts does she have left?
32-16-15
Correct answer: 32-16=16
32+16=48
Q3.
What is the inverse of the following equation? 52-25=27
27-25=32
Correct answer: 27+25=52
52+25=27

3 Questions

Q1.
Solve the following word problem: Bob the builder worked for 28 days last month. This month he worked 18 days. How many days has he worked altogether?
18+18=36
28-18=10
Correct answer: 28+18=46
Q2.
Solve the following word problem: There were 51 builders on site. 32 were building houses and the rest were driving diggers. How many builders were driving diggers?
32+32=35
Correct answer: 51-32=19
51+32=83
Q3.
Solve the following word problem: Ms. Dobrowolski bought 54 bricks at the store. She used 38 of them to start building a summer house. How many bricks does she have left?
Correct answer: 54-38=16
54-38=26
54+38=92