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Multiplying 3 Digit Numbers by 1 Digit Numbers Using The Grid Method

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How to use the "grid method" to multiply a 3 digit number by a 1 digit number.

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Multiplying 3 Digit Numbers by 1 Digit Numbers Using The Grid Method

1. 1. Multiplying a 3 digit number by a 1 digit number Using the Grid Method For more maths help & free games related to this, visit: www.makemymathsbetter.com
2. 2. First, split the 3 digit number into hundreds, tens and units. For example; 642 is split up as 600, 4O and 2
3. 3. First, split the 3 digit number into hundreds, tens and units. For example; 642 is split up as 600, 4O and 2 289 is split up as 200, 80 and 9
4. 4. First, split the 3 digit number into hundreds, tens and units. For example; 642 is split up as 600, 4O and 2 289 is split up as 200, 80 and 9 356 is split up as 300, 50 and 6
5. 5. Then put the hundreds, tens and units into the top part of the grid and the number that you are multiplying by down the side of the grid. For example: 642 x 7: x 7 600 40 2
6. 6. Then put the hundreds, tens and units into the top part of the grid and the number that you are multiplying by down the side of the grid. For example: 642 x 7: x 600 40 2 7 Then multiply the hundreds (600) by the number on the side (7): x 600 7 4200 40 2
7. 7. Then put the hundreds, tens and units into the top part of the grid and the number that you are multiplying by down the side of the grid. For example: 642 x 7: x 600 40 2 7 Then multiply the hundreds (600) by the number on the side (7): x 600 7 40 2 4200 Then multiply the tens (40) by the number on the side (7): x 600 40 7 4200 280 2
8. 8. And then multiply the units (2) by the number on the side (7): x 600 40 2 7 4200 280 14
9. 9. And then multiply the units (2) by the number on the side (7): x 600 40 2 7 4200 280 14 Finally, add the 3 answers (4200, 280 and 14) together: 642 x 7 = 4200 + 280 + 14 = 4494
10. 10. That’s it for now...... for more help with your maths, try my book: mastering multiplication tables on amazon.com