Topic 2

Equations for real

100

d + 9 = 25 (d= 6, 14, 16, 21)

d = 16

200

c - 8 = 25 (c=17,  28, 33, 35)

c=33

300

x + 2 = 11

x = 9

400

x - 17 = 13

x = 30

500

Daniel hiked 13 miles on the weekend. He hiked 8 miles on Saturday. How many miles did he hike on Sunday?

5 miles

The properties that equal

100

4 + 3 + 2 = 7 + 2

Addition Property of equality

200

9 + 8 - 5 = 17 - 5

Subtraction Property of equality

300

3 x 5 x 2 = 15 x 2

Multiplication Property of equality

400

(16 + 2) / 2 = 18 / 2

Division Property of equality

500

If 8 - 1 = 7, does 8 - 1 - 2 = 7 - 3?

No

The add or subtract business

100

25 + m = 49

m = 24

200

t - 40 = 3

t = 43

300

12 = x - 11

x = 23

400

22 = 13 + x

x = 9

500

d - 155 = 5,603

d = 5,758

Multiply or divide is our game

100

18x = 36

x = 2

200

w / 3 = 10

w = 30

300

2t = 12

t = 6

400

r / 5 = 20

r = 100

500

270 = 27x

x = 10

We are NOT equal!

100

Write an inequality: the distance, d, is at least 110 miles

d > or equal to 110

200

The cost, c, is less than $45. 

c < 45

300

Name three solutions to the inequality

y > 3

Any number bigger than 3

400

Name three solutions to the inequality z < or equal to 11

Any number less than 11, including 11

500

Death Valley is the hottest place in the United States. The highest temperature recorded there was 134* F. The lowest temperature recorded was 15* F. Name 3 possible temperatures that fall between these temperatures recorded in Death Valley.

Any number in between 15 and 134