1. Multiplying a 3 Digit Number by
a 2 Digit Number
Using the Grid Method
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2. First, split the 3 digit number into
hundreds, tens and units.
For example;
642 is split up as 600, 4O and 2

3. 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

4. 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

5. Then, split the 2 digit number into tens
and units
For example;
67 is split up as 6O and 7

6. 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

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
36 is split up as 30 and 6

8. 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
80
89
9
600
40
2

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:
x
600
40
2
80
89
9
Then multiply the hundreds (600) by the tens (80):
x
600
80
48000
9
40
2

10. 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
89
9
Then multiply the hundreds (600) by the tens (80):
x
600
80
40
2
48000
9
Then multiply the tens (40) by the tens (80):
x
600
40
80
48000
3200
9
2

11. Then multiply the units (2) by the tens (80):
x
600
40
2
80
48000
3200
160
9

12. 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):
X
600
40
2
80
48000
3200
160
9
5400

13. 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):
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

14. Then multiply the units (2) by the units (9):
X
600
40
2
80
48000
3200
160
9
5400
360
18

15. 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

16. 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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