Year 4 Maths 13.1.21

LO: Use a formal method to multiply.

WEDNESDAY

Success Criteria:

-Use the expanded multiplication method.

-Use the compact multiplication method.

-Multiply 3-digit numbers by 1-digit numbers.

LO: Use a formal method to multiply.

Starter

Success Criteria:

-Use the expanded multiplication method.

-Use the compact multiplication method.

-Multiply 3-digit numbers by 1-digit numbers.

Today we will be multiplying 3-digit numbers by 1 digit numbers • You can choose whether to use the compact method or expanded method for multiplying.

• You may choose to use a place value grid with counters.

Using a place value grid and counters 243

4 times

243 × 4 = 9 7 2

Hundreds

Tens

Ones

Have a think Hundreds

Tens

150 × 3 = 450

I think the answer is 45

Ones

123 × 4 = 492

Hundreds

Tens

Using the expanded meth Ones

H

T

O

1

2

3 4

4 4

1

2

8

0

0 0 9

2

(3 × 4)

(20 × 4)

(100 × 4)

123 × 4 = 492

Hundreds

Tens

Using the compact meth Ones

H

T

O

1

2

3 4

4

9 1

2

3 ones × 4 12 ones

2 tens × 4 8 tens 8 tens + 1 ten 9 tens 1 hundred × 4

4 hundreds

https://mathsbot.com/manipulatives/placeValueCounters

Questions

Challenge: True or false?

Answers Starter:

Challenge: True or false?