Year 3 Maths 12.1.21

12.1.21 LO: Multiply two digits by one digit Write out the multiplication calculation using the column method Multiply the ones by the one digit number, write the answer in the ones column Multiply the tens by the one digit number, write the answer in the tens column Read your answer

Warm up

Warm up Answers

Let’s try together

We can use our knowledge of counting in threes to help us count in thirties.

3, 6, 9 There are 90 pears in total.

30, 60, 90

Let’s try together

Let’s try together

You try

You try What multiplication sentence does this place value grid show?

Can you work out the answer?

You could partition or use the compact written method.

12.1.21 LO: Multiply two digits by one digit Write out the multiplication calculation using the short multiplication written method Multiply the ones by the one digit number, write the answer in the ones column Multiply the tens by the one digit number, write the answer in the tens column Read your answer

Work 1 1.

2.

24 x 2 =

33 x 2 =

3.

4.

12 x 5 =

13 x 2 =

5.

23 x 3 =

Work 2 1.

Annie has used a place value grid and the short multiplication method to solve 43x2. What is the same and what is different about the two methods?

2.

3.

4.

Work 3 2.

1.

Work out the following multiplication calculations using the column method.

1 a) 12 x 4 b) 15 x 2 c) 22 x 4 d) 31 x 3 e) 44 x 2

3.

4.

5.

6.

Work 4 – multiplying one digit by one digit (10 x table) 3.

1. Count forwards and backwards in tens to 100. Can you go higher?

2.

5.

4.

Work 1 ANSWERS 1.

2.

24 x 2 = 48

33 x 2 = 66

3.

4.

12 x 5 = 60

13 x 2 = 26

5.

23 x 3 = 69

Work 2 ANSWERS

2.

1.

4

Annie has used a place value grid and the short multiplication method to solve 43x2. What is the same and what is different about the two methods?

8

8

8

3.

4.

Work 3 ANSWERS 2.

1.

Work out the following multiplication calculations using the column method.

1 a) 12 x 4 = 48 b) 14 x 2 = 28 c) 22 x 4 = 88

23 x 3 = 69 32 x 3 = 96 42 x 2 = 84

d) 31 x 3 = 93 e) 44 x 2 = 88

3.

4.

5.

6.

Work 4 ANSWERS 1. Count forwards and backwards in tens to 100. Can you go higher?

0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 100, 90, 80, 70, 60, 50, 40, 30, 20, 10, 0