Algebra
What is the name for a letter or symbol that represents an unknown number?
Variable
Calculate 0.4 x 3
1.2
Simplify 8/12
2/3
The temperature is -3 degrees and it rises 5 degrees. What is the new temperature?
2 degrees
What is the largest planet in our solar system?
Expand 5(a+4)
5a + 20
Calculate 8.4 ÷ 4
2.1
3/5 +1/2
11/10
Calculate: 3 x (-4) + 15
How many continents are there on Earth?
Bonus (100 points if you can name them)
7
Asia, Africa, North America, South America, Antarctica, Europe, and Australia
Write an expression for double a number minus 4
2x - 4
Calculate 0.056 x 100
5.6
5/6 x 9/10
3/4
A submarine is at -40m and it rises 15m. Where is it now?
- 25m
What gas do humans breathe out when they exhale?
Carbon Dioxide
Simplify 10 a x 2 b - 3ab + 5c
17ab + 5c
True or false?
0.5 x 100 = 500
False - it equals 50
What fraction of an hour is 15 minutes?
1/4
Calculate: (-8) x 5 - (-12)
-28
What is the name of the annual music awards in the US known for recognising the best songs and artists?
The Grammys Awards
A number is multiplied by 3, then 7 is added. The answer is 25. Write and solve the equation
(200 points for equation)
(300 points for solving the equation)
3x + 7 = 25
x = 6
A number is multiplied by 100, then divided by 10. If the starting number is 4.38 what is the final answer?
43.8
Calculate: 3/4 x (2/3 + 5/6) - 1/2
5/8
Calculate (-6) x (-4) + (-15) ÷ 3
19
Riddle: I am always in front of you but can't be seen. What am I?
The future