Multiplying a 3 Digit Number by a 2 Digit Number Using The Grid Method
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Transcript of 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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