multiplying a 3 digit number by a 2 digit number using the grid method

Multiplying a 3 Digit Number by a 2 Digit Number

Using the Grid Method

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First, split the 3 digit number into hundreds, tens and units.

For example;642 is split up as 600, 4O and 2

First, split the 3 digit number into hundreds, tens and units.

For example;642 is split up as 600, 4O and 2

275 is split up as 200, 70 and 5

First, split the 3 digit number into hundreds, tens and units.

For example;642 is split up as 600, 4O and 2

275 is split up as 200, 70 and 5

356 is split up as 300, 50 and 6

Then, split the 2 digit number into tens and units

For example;67 is split up as 6O and 7

Then, split the 2 digit number into tens and units

For example;67 is split up as 6O and 7

89 is split up as 80 and 9

Then, split the 2 digit number into tens and units

For example;67 is split up as 6O and 7

89 is split up as 80 and 9

36 is split up as 30 and 6

Then put the 3 digit number on the top part of the grid and the 2 digit number, that you are multiplying by, down the side of the

grid.For example: 642 x 89:

x 600 40 2

80

989

Then put the 3 digit number on the top part of the grid and the 2 digit number, that you are multiplying by, down the side of the

grid.For example: 642 x 89:

Then multiply the hundreds (600) by the tens (80):

x 600 40 2

80

989

x 600 40 2

80 48000

9

Then put the 3 digit number on the top part of the grid and the 2 digit number, that you are multiplying by, down the side of the

grid.For example: 642 x 89:

Then multiply the hundreds (600) by the tens (80):

Then multiply the tens (40) by the tens (80):

x 600 40 2

80

989

x 600 40 2

80 48000

9

x 600 40 2

80 48000 3200

9

Then multiply the units (2) by the tens (80):x 600 40 2

80 48000 3200 160

9

Now multiply the hundreds (600) by the units (9):

Then multiply the units (2) by the tens (80):x 600 40 2

80 48000 3200 160

9

X 600 40 2

80 48000 3200 160

9 5400

Now multiply the hundreds (600) by the units (9):

Then multiply the units (2) by the tens (80):x 600 40 2

80 48000 3200 160

9

X 600 40 2

80 48000 3200 160

9 5400

Then multiply the tens (40) by the units (9):

X 600 40 2

80 48000 3200 160

9 5400 360

Then multiply the units (2) by the units (9):

X 600 40 2

80 48000 3200 160

9 5400 360 18

Then multiply the units (2) by the units (9):

X 600 40 2

80 48000 3200 160

9 5400 360 18

Finally, add the 6 answers together: 642 x 89 = 48000 + 3200 + 160 + 5400 + 360 + 18

= 57138

Then multiply the units (2) by the units (9):

X 600 40 2

80 48000 3200 160

9 5400 360 18

Finally, add the 6 answers together: 642 x 89 = 48000 + 3200 + 160 + 5400 + 360 + 18

= 57138

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