2 digit by 1 digit multiplication
Multiplication Comparisons
Estimate Products
Word Problems
Vocabulary
100

25 x 6

150

100

21 is 7 times as many as 3.

21 = 7 x 3

100

24 x 2

20 x 2 = 40

100

Jill has 8 baskets.  She puts 7 apples in each basket.  How many apples does she have all together?

56

100

the answer to a multiplication problem

product

200

32 x 5

160

200

Write a comparison sentence for 8 × 5 = 40 

8 times as many as 5 is 40

200

32 x 9

30 x 9 = 270

200

Joe is building 2 boxes.  Each box takes 27 nails to build.  How many nails does he need?

54

200

a number that is multiplied by another number to find a product

factor

300

13 x 2

26

300

Alan is 14 years old. This is twice as old as his brother James is. How old is James?

7

300

42 x 10

40 x 10 = 400

300

Lisa travels 213 miles a day for 5 days.  How many miles did she travel all together?

1,065

300

to find an answer that is close to the exact amount

estimate

400

48 x 3

144

400

There are 5 times as many yellow labs as terriers in the dog park. If there are a total of 18 dogs, how many dogs are terriers?

3

400

625 x 5

600 x 5 = 3,000

400

Emily flew 3,062 miles this year.  If she travels the same distance for the next 2 years how many miles will she travel all together?

6,124

400

the property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products

Distributive Property

500

97 x 4

388

500

Last weekend, Mandy collected 4 times as many shells as Cameron. Together, they collected 40 shells. How many shells did Mandy collect?

32

500

45 x 12

50 x 12 = 600

500

Kellis' school donated 1,729 canned goods for charity this year.  If they donate the same amount of canned goods for the next 5 years how many canned goods will they have donated to charity in all?

8,645

500

to exchange amounts of equal value to rename a number

regroup