This week we have looked at different ways to multiply a 1-digit number by a 2-digit number. Let’s look at 2 of the methods we used.

### The grid method:

The grid method is a written method used to teach children multiplication. It involves **partitioning numbers into tens and units before they are multiplied**.

37 x 5 : Work this out by partitioning numbers and putting them in a grid, then multiplying each one in turn:

The answers of each multiplication calculation (150 and 35) then need to be added, to find the answer, which is 185.

### The expanded method of multiplication.

T O

1 4

x 5

__________

2 0 (5×4)

5 0 (5×10)

__________

7 0

**Your turn. Can you find the product of these operations using your chosen method?**

**12 x 8 = ****25 x 5 = ****36 x 3 = ****44 x 4 = ****63 x 2 =**

x 10 2

8 160 16

160+10+2=172

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x 20 5

5 100 25

25×5=125

20 5

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X 10 2

8 80 16

12×8=96

10 2

12×8=96

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X 60 3

2 120 6

120+6=126

63×2=126

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X 30 6

3 90 18

90+18=108

36×3=108

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X 40 4

4 160 16

160+16=176

44×4=176

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