Chapter 2 Multiply by 1-digit Numbers

Word Problems

100

Nando has 4 goldfish. Jill has 3 goldfish. Cooper has 2 times as many goldfish as Nando and Jill combined. How many goldfish does Cooper have?

14 goldfish

200

There are 8 students in the art club. There are 3 times as many students in chorus. How many students are in chorus?

24 students

300

There are 27 campers. This is 9 times as many as the number of counselors. How many counselors are there?

3 counselors 

400

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

3 terriers

500

In Sean's fishtank there are 6 times as many goldfish as guppies. There are a total of 21 fish in the tank. How many more goldfish are there than guppies?

15 more goldfish

Distributive Property

100

63x7

441

200

8x(30+5)

280

300

(6x70)+(6x4)

444

400

562x8

4,496

500

8,125x9

73,125

Partial Product

100

18x5

90

200

34x9

306

300

532x6

3,192

400

7,145x3

21,435

500

96,541x9

868,869

Regrouping

100

13x8

104

200

54x8

432

300

125x5

625

400

329x7

2,303

500

6,786x7

47,502

Random

100

Estimate:

46x4

50x4= 200

200

Estimate: 

678x7

700x7=4900

300

What property is this:

23x7=7x23

Communative

400

4x56x25

5,600

500

3x31x10

930