Unit 1 Math Review

Factor/Multiples

100

Factor of 25

1,5,25

200

Multiples of 6 up to 18

6,12,18

300

Multiple of 3 up to 25

3,6,9,12,15,18,21,24

400

Factor of 18

1, 2, 3, 6, 9, 18

500

Multiples of 5 up to 50

5,10,15,20,25,30,35,40,45,50

Prime/Composite

100

Is 16 prime or composite.

Composite

200

Is 37 prime or composite.

Prime

300

Is 47 prime or composite.

Prime

400

Is 52 prime or composite.

composite

500

What is the difference between a prime and composite number?

A prime number only has one factor. (1 and itself)

A composite number has more than two factors.

Order of Operations

100

7 x 4 + 2

30

200

9 - 2 + 17

24

300

2 x 4 + 9 - 3 X 5

2

400

(13 - 6) + (5 - 3) + 20

29

500

[3 x 4 / 2] + 10 - 6

10

Multiplication

100

10 x 47

470

200

23 x 26

598

300

36 x 42

1, 512

400

57 x 89

5,073

500

A flower garden has 9 rows of tulips. There are 24 tulips in each row. How many tulips are there in all

216 tulips

Division

100

156 / 4

39

200

342 / 6

57

300

265 / 23

11 R12

400

389 / 27

14 R21

500

Maria is making seating arrangements for her wedding. She wants to seat 9 people at each table and she has 330 guests. How many tables will she need?

36 R 6 

She has a remainder and they can not be left without a table. Therefore, she needs another table.

37 Tables