Adding, Subtracting, and Multiplying Decimals

GCF

100

GCF stands for?

Greatest Common Factor

200

What are the factors of 12?

1,2,3,4,6,12

300

Find the GCF of 14 and 36

2

400

Find the GCF of 42 and 56

14

500

Find the GCF of 39 and 42

3

LCM

100

LCM stand for?

Lowest/Least Common Multiple

200

What are the first 6 multiples of 8?

8, 16, 24, 32, 40, 48

300

Find the LCM of 16 and 48

48

400

Find the LCM of 36 and 24

72

500

Find the LCM of 7 and 18

126

Adding Integers

100

3 + (-5) 

-2

200

1210 + (-4)

1206

300

(-120) + 51 

-69

400

From 30 metres below sea level, Greg took off in his helicopter and ascended 100 metres. Which integer represents Greg's elevation now?

70 metres

500

Spencer ended round one of a game show with -1225 points. In Round Two, he scored 682 points in the science category. What was his total score after the end of round two?

-543

Subtracting Integers

100

(-5) - (-6) 

1

200

17 - (-10)

27

300

(-189) - (-100)

-89

400

Toronto is experiencing some crazy weather. Yesterday was -24°C, t0day is +18°C. What is the difference between yesterday and today's temperature?

42 degrees

500

The coldest day ever recorded in Canadian history was a bone-chilling -63 degrees Celsius in the Yukon Territory in 1948. In June 2021, Lytton, BC, smashed the record for Canada's hottest day at a scorching 47 degrees Celsius. What is the difference between these 2 temperatures? 

110

Multiplying decimals

100

0.3 x 0.4

0.12

200

0.24 x 0.53

0.1272

300

0.525 x 12.5

6.3625

400

15.62 x 0.33

5.0646

500

-543 x 3.21

-1,743.03