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# Multiply Using Partial Products micro-lesson

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When you multiply two digits by two digits, you might want to try the partial product method. Let's take 85 x 29. We’ll first look at this 9 in the ones place. We're going to multiply it twice, 9 x 5 is 45 and 9 x 80 is 720. Now, if I look at the 2, and I realize the two is in the tens place so it's worth 20. So, I'm going to multiply by 20, 20 x 5 is 100 and 20 x 80 is 1,600. Our final step is to add up all of the partial products 45 + 720 + 120 and 1,600 gives us 2,465 for our final product of 85 x 29. The partial product strategy is another great method for multiplying two digits by two digits. Kids earn more screen time by answering fun educational questions.

1) 20
2) 2
3) 200
4) 2000

1) 4
2) 3
3) 2
4) 1

1) 4
2) 3
3) 2
4) 1

1) 2
2) 3
3) 4
4) 5

1) 2
2) 3
3) 4
4) 5

1) 392
2) 77
3) 239
4) 342

1) 9
2) 90
3) 900
4) 9000

1) 168
2) 160
3) 640
4) 174

1) 325
2) 265
3) 310
4) 350

1) 455
2) 420
3) 95
4) 425

1) 585
2) 485
3) 72
4) 288

1) 2465
2) 2546
3) 2645
4) 2564

1) 3913
2) 3600
3) 3870
4) 4050

1) 5166
2) 4800
3) 5009
4) 5100
• #### A farmer has 57 cows. Each cow produces 28 liters of milk. How many liters of milk do the cows produce in all?

1) 1,596 liters of milk
2) 210 liters of milk
3) 696 liters of milk
4) 120 liters of milk
• #### What are the partial products for 95 x 3?

1) 270 + 15
2) 27 + 15
3) 270 + 150
4) 2,700 + 15
• #### Which of these shows the correct partial products for this problem?

1) 3,600 + 40 + 270 + 3
2) 30 + 40 + 27 + 360
3) 30 + 270 + 4 + 3,600
4) 3,600 + 40 + 27 + 30
• #### What are the four partial products you should add together to find the total product for this problem?

1) Any of the above will work.
2) 6 + 240 +120 + 4,800
3) 240 + 120 + 4,800 + 6
4) 4,800 +120 + 6 + 240
• #### Emma says the partial products for 84 x 2 are 8 and 16. What did she do wrong?

1) She multiplied 2 x 8 instead of 2 x 80.
2) She added 2 + 80 instead of multiplying 2 x 80.
3) She multiplied 2 x 8 instead of adding 2 + 8.
4) She added 2 + 4 instead of multiplying 4 x 2.

1) Yes
2) No

1) Yes
2) No

1) No
2) Yes

1) TRUE
2) FALSE
• #### The 6 in 65 x 7 is worth 60.

1) TRUE
2) FALSE ## Recreational screen time

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