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Published byMikayla Arledge Modified over 2 years ago

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Multiplying a 3 digit number by a 1 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 2 289 is split up as 200, 80 and 9 356 is split up as 300, 50 and 6

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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: Then multiply the hundreds (600) by the number on the side (7): Then multiply the tens (40) by the number on the side (7): x600402 7 x600402 74200 x600402 74200280

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And then multiply the units (2) by the number on the side (7): Finally, add the 3 answers (4200, 280 and 14) together: 642 x 7 = 4200 + 280 + 14 = 4494 x600402 7420028014

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