Multiplying Two Digit Numbers by Two Digit Numbers

Front

What is a partial product?

Back

A partial product is the result of multiplying a single digit of one number by the entire other number in a multiplication problem.

Tags

CCSS.4.NBT.B.5

Front

How do you multiply two-digit numbers?

Back

To multiply two-digit numbers, break them into tens and ones, multiply each part separately, and then add the partial products together.

Tags

CCSS.4.NBT.B.5

Front

What is the first step in multiplying 35 by 42?

Back

Break down 35 into 30 and 5, and 42 into 40 and 2.

Tags

CCSS.4.NBT.B.5

Front

Calculate 30 x 40.

Back

1,200

Tags

CCSS.4.NBT.B.5

Front

Calculate 5 x 40.

Back

200

Tags

CCSS.4.NBT.B.5

Front

Calculate 30 x 2.

Back

60

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CCSS.3.NBT.A.3

Front

Calculate 5 x 2.

Back

10

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CCSS.3.OA.C.7

Front

What is the sum of the partial products 1,200, 200, 60, and 10?

Back

1,470

Tags

CCSS.5.NBT.B.5

Front

What is the area of a rectangle with a length of 80 and a width of 80?

Back

6,400 (Area = length x width)

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the product of 12 and 10?

Back

120

Tags

CCSS.4.NBT.B.5