Pre-Algebra Unit 1 Review

Decimals

100

5 +0.18

5.18

200

6.57 - 0.38

6.19

300

7.89 + 3.56

11.45

400

4.1 * 0.02

0.082

500

8.9 * 1.5

13.35

Fractions

100

3/14 + 7/14

10/14 or 5/7

200

5/10 - 3/4

-10/40 or -1/4

300

8/3 - 5/4

17/12

400

3/9 * 12/15

36/135

500

9/11 * 10/4

90/44 or 45/22

Identify Like Terms, Constants, etc.

100

Identify any Constants:

17y + 45 - 8a

45

200

Identify any Constants and Coefficients:

17b + 45y - 22

Constants: -22

Coefficients: 17 and 45

300

Identify any Constants and Coefficients:

65b - 23y + 36 - 2a

Constants: 36

Coefficients: 65 and -23 and -2

400

Identify any Constants and Coefficients:

83r + 23y - 46 - 22

Constants: -46 and -22

Coefficients: 83 and 23

500

Identify any Like Terms, Constants and Coefficients:

67x + 19b + 20x - 2y + 4b

Like Terms: 67x and 20x, 19b and 4b, -2y

Constants: None

Coefficients: 67, 19, 20, -2, 4

Combine Like Terms

100

4y - 7a + 8y + 4a

-3a + 12y

200

12b + 20 - 7 + 3b

15b + 13

300

19a - 30y + 5 +2a - 9 + 2y

21a - 28y -4

400

2y + 25x -1 +2y - 4 + 3x

28x + 4y - 5

500

100 - 20x + 34 - 3b

-20x - 3b + 134

Distribution

100

6(2x +3y)

12x+18y

200

16(x - 2)

16x - 32

300

10 -4(2x + 5)

-8x - 10

400

5 + 2(5n - 7)

10n - 9

500

11 - 5(3n + 7m)

-15n - 35m + 11