IXL | Multiply small 2-digit numbers by 2-digit numbers using area models I | 4th grade math

or

Which model represents

31

×

15

?

10

1

30

5

10

5

30

1

ref_doc_title.

or

Learn with an example

question

Which model represents

45

×

16

?

10

6

40

5

40

6

10

5

solution

Each model is a rectangle made of four smaller rectangles.

One side length of this model is

40

+

5

,

which is 45. The other side length of this model is

10

+

6

,

which is 16.

10

6

40

5

This model represents

45

×

16

.

One side length of this model is

10

+

5

,

which is 15. The other side length of this model is

40

+

6

,

which is 46.

40

6

10

5

This model represents

15

×

46

.

This model does not represent

45

×

16

.

Looking for more? Try these:

Lesson: Area model multiplication

or

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Work it out

Not feeling ready yet? These can help:

Multiply 1-digit numbers by small 2-digit numbers using area models I

Lesson: Area model multiplication