Comparing and ordering rational numbers
Compare decimals
-1.2 ? 0.8
-1.2 < 0.8.
3 x 9 + 18 - 20 + 1,000,000
1,000,025
20 is 20% of what number
150
Mix 3 liters of water with 4 lemons to make lemonade. How many liters of water are mixed with 8 lemons.
6 liters of water
Evaluate the expression
q ÷ 6 + p; p = 10 and q = 12
12
Compare decimals
-2.65 ? -2.40
-2.63 < -2.40
Evaluate the expression
150 ÷ (6 + 3 x 8) - 5
0
18 is what percent of 48?
37.5%
3 gallons of paint cover 900 square feet. How many gallons will cover 300 square feet?
1 gallon
Evaluate the expression
6z+4x=?
24
Compare fractions
6/7 ? -2/3
6/7 < -2/3
Evaluate the expression
9 - 5 ÷ (8 - 3) x 2 + 6
13
Answer the question
47% of the students in a class of 34 students has glasses or contacts. How many students in the class have either glasses or contacts?
16 of the students wear either glasses or contacts.
A firefighter truck can hold 3000 gallons of water. A firefighter can deliver 160 gallons of water every 2 minutes.
1. How much water will be delivered in 10 minutes?
2. How long will it take for the firefighter to empty the tank
1. 800 gallons of water will be delivered in 10 minutes
2. 37 minutes and 30 seconds
Evaluate the expression
57
Compare fractions
-3/8 ? -5/16
-3/8 < -5/16
Evaluate the expression
18 + 36 ÷ 32
22
Answer the question
The Math planet school has increased its student body from 150 students to 240 from last year. How big is the increase in percent?
The student body has increased by 60%
Philip walks 0.8 miles on each trip to the park. How far will Philip walk if he makes 5 trips to the park?
4 miles
yx ÷ 2; y = 2 and x = 7
14
Compare decimals and fractions
-3 5/8 ? -3.629
-3 5/8 < - 3.629
Evaluate the expression
(5 x 7)2 + 56 - 45(8 - 4) + 50
1151
18 is 125% of what number?
14.4
A kite and a spool cost $29.75 together. Jason paid $228.55 for 12 kites and 5 spools. How much will Ted pay for 2 kits and 4 spools?
$96.20
Evaluate the expression
z + x3; z = 19 and x = 1
20