1 White Rose Maths 2019 White Rose Maths

Multiplying 2 digit numbers by a 1 digit number – no exchange

Value of digits What place value column are each of my digits in ?

Question: 21 X 2 42 Steps: 1. We are going to multiply 1 one

When we multiplied 1 by 2 why did this go on the right? When

• Lets practice a tricky question to check our understanding. 6 2 X

Teddy completes the same calculation as Alex. Can you spot and explain his mistake?

Dexter says, Is Dexter correct? 20 © White Rose Maths 2019

Task • Copy out the calculations into your exercise book. Watch carefully how Mrs.

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1 © White Rose Maths 2019

Multiplying 2 digit numbers by a 1 digit number – no exchange

Value of digits What place value column are each of my digits in ? What is the value of each digit ? 23 multiply by 2 Tens 20 Ones 3 Ones 2

2 3 x 2 x T O 2 3 2

T T T Tens Ones x 0 O O O T O 2 3 2

Question: 21 X 2 42 Steps: 1. We are going to multiply 1 one by 2 (1 x 2) 2. We are going to write the answer in the ones column, within the equal lines. 3. We are going to multiply 2 tens by 2 (20 x 2) 4. We are going to write the answer in the tens column, within the equal lines, remembering to use place value knowledge.

When we multiplied 1 by 2 why did this go on the right? When we multiplied 2 tens by 2 why did this go on the left?

Question 2 1 x 3 6 3

• Lets practice a tricky question to check our understanding. 6 2 X 2 124

Teddy completes the same calculation as Alex. Can you spot and explain his mistake? T O 4 3 2 8 0 18 6 © White Rose Maths 2019

Task • Copy out the calculations into your exercise book. Watch carefully how Mrs. Willgoose organizes the questions on the squared paper.