Percentage & Fractions
d.p & s.f. & bounds
Standard Form & Exponent
Ratios
Factors & Fractions
100

Solve 1-20%. Leave your answer as a fraction

80/100 (or something close to it)

100

True or false: If I want to round 3200.58 to 1 d.p, the answer will be 3000


False (the true answer will be 3200.6)

100

True or false: 3*10 is the same 3*101

True

100

There are 3 blue balls and 5 green balls. Write a ratio to represent this. (There are more than one correct answer, as long as you can explain)

3:5 (or something similar)

100

What is the LCM (Lowest Common Multiple) between 27 and 66

594

200

What is twenty percent of three quarters

(20/100)*(3/4) = 60/400 = 15% = 3/20

200

True or false: If I want to round 35.85 to 2 s.f., I will get 36.00

True

200

Rewrite

3/100

 in standard form: 


3*10^-2 

200

The ratio between blue balls and green balls is 10:20. How many balls are there in total?

30

200

True or false:

If I simplify 45/27, I will get 

1 2/3

3/5

300

20 is x% of 80

20/80 = 0.25 = 25%

300

Estimate 35.8 * 9.8 (You have to show your math to receive all credit)

36*10 (or something close to that will be good)

300

Solve for ?

8000 = 80*10^?

?=2

300

Divide 1350 into the ratios of 1:3:5

150: 450: 750

300

True or false: The HCF for 45 and 90 will be 15

False

400

Jenny got a raise from her boss. After a 20% raise, her salary became 84,000 RMB. What was her salary before the raise?

70000 * (1+20%)= 84000

400

85 is rounded up to the nearest single. What will be the lower bound and the upper bound?

85 +/- 0.5

400

(6*10^5)\div(2*10^4)

3*(10^1)

400

Mr. Zou is making jungle juice for his friends. The ratio between pineapple juice and apple juice is 3:5. If he made 40 liters of jungle juice, how much pineapple juice did he use?

40 * (3/8) = 15 liters

400

There are two numbers. Their LCF is 35, and their LCM is 1155. What are these two numbers?

385 and 105

500

Mr. Zou lost weight. His weight went from 80 to 75 kilograms. Write the decrease as a percentage. 

(80-75)/80 = 0.0625 = 6.25%

500

8.0 is rounded up to the nearest tenth. What will be the lower bound and the upper bound?

lower bound: 7.95

upper bound: 8.04

500

(4*10^9)+(7*10^10)

(7.4*10^10)

500

Ketchup is made up of tomatoes and water. 500 grams of tomatoes and 200 grams of water can make 700 grams of ketchup. If Aidan only has 250 grams of tomatoes, how much ketchup can he make?

350 grams.

500

A new school is deciding whether their lessons should be 30, 50 or 60 minutes long. Each lesson duration fits exactly into the total teaching time of each school day. 

How long is the total teaching time of each school day?

300 minutes