Math 7 Review Week 3 Integers + Fractions

Fractions

100

Convert the improper fraction 11/4 into a mixed number.

2 3/4

200

2/7 + 3/7

5/7

300

1/2 + 1/3 

5/6

400

3/4 - 2/5

5/6

500

1/7 - 3/21

6/21

Adding Integers

100

(-4) + 9

5

200

(-6) + (-7)

-13

300

12 + (-15)

-3

400

(-8) + 14 + (-2)

4

500

(-25) + 18 + (-12)

-19

Subtracting Integers

100

5 - 9

-4

200

(-3) - 6

-9

300

4 - (-8)

12

400

(-10)-(-15)

5

500

(-14) - 7 - (-5)

-16

Integer word problems (Double points!)

100

The temperature in Edmonton was -5°C in the morning. By noon, it rose 8 degrees. What was the temperature at noon?

3°C

200

A submarine sits at 40 meters below sea level (-40 m). It dives down another 25 meters. What is its new position relative to sea level?

-65 m or 65 meters below sea level

300

You have $20 in your bank account. You use your card to buy a sweater for $35. What is your new account balance?

- $15

400

A hiker starts at an elevation of 150 meters above sea level, descends 200 meters into a valley, and then climbs up 80 meters. What is their final elevation?

30 meters above sea level

500

On Monday, the temperature was -10°C. On Tuesday, it was 6 degrees warmer. On Wednesday, it dropped by 11 degrees. What was the temperature on Wednesday?

-15°C