IXL | Multiply 2-digit numbers using partial products | 5th grade math

or

Multiply using partial products. Fill in the missing numbers.

	83
×	67

	4,800

	560
+	21

ref_doc_title.

or

Learn with an example

question

Multiply using partial products. Fill in the missing numbers.

	18
×	49


	320
	90
+	72

solution

You can use an area model to help find the partial products. First, write 18 as

10

+

8

and write 49 as

40

+

9

.

Then, multiply to find the area of each rectangle.

40

9

10

400

90

8

320

72

The area of each rectangle is one of the partial products. The missing partial product comes from multiplying 10 by 40. Fill in 400.

	18
×	49

	400
	320
	90
+	72

	?

Now, add the partial products.

	18
×	49

	400
	320
	90
+	72

	882

So,

18

×

49

is 882.

Looking for more? Try these:

Lesson: Partial products

or

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Work it out

Not feeling ready yet? These can help:

Multiply 1-digit numbers by 3-digit or 4-digit numbers using partial products

I.7Multiply 2-digit numbers by 2-digit numbers using area models

Lesson: Partial products