Year 3

# Deriving new facts from multiplication facts

Year 3

# Deriving new facts from multiplication facts

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## Lesson details

### Key learning points

- In this lesson, we will use the commutative property of multiplication, and our knowledge of inverse operations to help us derive new facts about general multiplication by, for example, rearranging equations in different ways.

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### 5 Questions

Q1.

There are two structures of division. What are they?

grouping and quotient

quotient and sharing

Q2.

Which calculation is correct?

80 divided by 10 is equal to 80

800 divided by 100 is equal to 80

Q3.

Peter said 601 divided by 10 is 61. John said that 610 divided by 10 is 61. Who is correct?

Both are right

Both are wrong

Peter

Q4.

Which words are used in a division equation?

factor,factor and product

product, divisor and quotient

Q5.

Do you get the same answer when dividing whole numbers by 10 or 100 using place value as when dividing by grouping?

No

### 5 Questions

Q1.

What does the word 'derive' mean?

Divide

Use the inverse

Q2.

Which of the following are strategies for deriving facts?

Doubling

Halving

Multiplication and division are inverse operations

Multiplication is commutative

Place value

Q3.

Which fact can be derived from 2 x 4 = 8

4 x 5 = 20

4 x 8 = 2

Q4.

What fact can be derived from 6 divided by 2 is equal to 3?

2 + 3 = 5

6 multiplied by 2 is equal to 3

Q5.

Which fact can be derived from 4 x 6 = 24?

2 + 6 = 8

40 x 2 = 80