Multiplying a 3 Digit Number by a 2 Digit Number Using The Grid Method
Multiplying by two-and three times one-digit
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Transcript of Multiplying by two-and three times one-digit
![Page 1: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/1.jpg)
Multiplying Two- and Three- Digit
Numbers by a One- Digit Number
![Page 2: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/2.jpg)
Step 1Think about 3 groups of 24.
243x
![Page 3: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/3.jpg)
243x
Step 2Multiply the ones.
Think:4 x 3 = 12
243x
![Page 4: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/4.jpg)
Step 3Regroup 12 ones as 1 ten and 2 ones. Write down the ones. Carry the tens.
243x2
1
![Page 5: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/5.jpg)
Step 4Then multiply the bottom ones times the tens. Add in the one ten you carried over.
Think:6 tens + 1 ten = 7 tens
724
3x2
1
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Step 5Your final answer is 72.
724
3x2
1
Let’s try another problem!
![Page 7: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/7.jpg)
Step 1Think about 5 groups of 45.
455x
![Page 8: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/8.jpg)
455x
Step 2Multiply the ones.
Think:5 x 5 = 25
455x
![Page 9: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/9.jpg)
Step 3Regroup 25 ones as 2 tens and 5 ones. Write down the ones. Carry the tens.
455x5
2
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Step 4Then multiply the bottom ones times the tens. Add in the two ten you carried over.
Think:20 tens + 2 tens = 22
455x5
2
22
![Page 11: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/11.jpg)
Step 5Your final answer is 225.
Let’s try a harder problem!
455x5
2
22
![Page 12: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/12.jpg)
Step 1Think about 4 groups of 364.
644x
3
![Page 13: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/13.jpg)
Step 2Multiply the ones.
Think:4 x 4 = 16
644x
3644x
3
![Page 14: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/14.jpg)
Step 3Regroup 16 ones as 1 ten and 6 ones. Write down the ones. Carry the tens.
6
164
4x3
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Step 4Then multiply the bottom ones times the tens. Add in the one ten you carried over.
Think:24 tens + 1 ten = 25 tens
664
4x3
1
![Page 16: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/16.jpg)
Step 5Regroup 25 tens as two hundreds and five tens. Write down the tens. Carry the hundreds.
644x
36
1
5
2
![Page 17: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/17.jpg)
Step 6Then multiply the bottom ones times the hundreds. Add in the two hundreds you carried over.
Think:12 hundreds + 2 hundreds = 14
664
4x3
12
5
![Page 18: Multiplying by two-and three times one-digit](https://reader035.fdocuments.net/reader035/viewer/2022070512/589d7fe81a28ab69538b69df/html5/thumbnails/18.jpg)
Step 7Your final answer is 1,456. 6
644x
312
51,4
Now try some on your own!