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

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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

Lesson appears in

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