Year 3

Year 3

Using the inverse operation to find missing numbers

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Lesson details

Key learning points

1. In this lesson, we will use our knowledge of multiplication and division 'fact families' in order to find the missing number in a range of questions. We will use arrays to represent the relationship between inverse operations, and explore how fact families around multiplication and division help us discover new facts about multiplication and division.

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5 Questions

Q1.
The inverse of multiplication is...
subtraction
Q2.
Knowing your times tables can help to solve division calculations
false
Q3.
The inverse of 3 x 4 = is
Correct answer: 12 ÷ 3
3 x 3 =
4 x 3
4 x 4
Q4.
Which multiplication fact will help you solve this division calculation? 18 ÷ 6 =
18 ÷ 2 = 9
6 ÷ 2 = 3
Correct answer: 6 x 3 = 18
6 x 6 =36
Q5.
I have 30 sweets to share with my friends. I have 5 friends. How many sweets will each of them get?
30
35
5

5 Questions

Q1.
The inverse of division is
subtraction
Q2.
If you know that 3 x 6 = 18 this can help solve
18 ÷ 2 =
Correct answer: 18 ÷ 6 =
18 x 2 =
6 ÷ 3 =
Q3.
Which number is missing from this this fact family 21, 7 and ....?
1
2