Year 3

Year 3

# Solving word problems with unknown values

## Lesson details

### Key learning points

1. In this lesson, we will answer addition and subtraction word problems which require us to identify the unknown quantity.

### 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.

## Video

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## Worksheet

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## Starter quiz

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### 5 Questions

Q1.
We estimate when answering questions to...
to see if it's addition or subtraction
Q2.
Bar models help us to...
pick nice colours
see a pretty picture
Correct answer: Work out the known/unknown values
Q3.
We always need to use column addition or subtraction when answering word problems?
True
Q4.
Class B won 456 house-points before Christmas. Class D won 106 more. How many did Class D win? Does this question require addition or subtraction to answer it?
Subtraction
Q5.
Edinburgh castle sold 345 tickets for tours on Monday. On Tuesday it sold 109 less. How many tickets were sold on Tuesday?
109
345
454

## Exit quiz

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### 5 Questions

Q1.
Word problems are...
easy to just guess
Never multiplication
Correct answer: Real life Maths problems to be solved
Q2.
Does this bar model show an addition or a subtraction problem?
Q3.
Tia is looking after the neighbour's dogs. The adult dog eats 450 g more than the puppy. If the adult dog eats 875 g how much will the puppy eat? Does this question need addition or subtraction to answer it?