Numbers
What is 0.1 + 0.01 + 0.001?
0.111
What's the sum of the first 5 prime numbers?
2 + 3 + 5 + 7 + 11 = 28
Simplify: 3a + 2b + 4a – b
7a + b
How many sides does a circle have?
Two — inside and outside!
How many degrees in a straight line?
180
A number is divisible by 3 and 5 but not by 10. What could it be?
15, 45, 75, etc.
How many factors does 36 have?
9 (1, 2, 3, 4, 6, 9, 12, 18, 36)
Solve for x: x + 7 = 12
5
A farmer has 10 goats. All but 3 run away. How many are left?
3
What is the perimeter of a square with side length 6 cm?
24 cm
I am a square number and also a multiple of 4. I’m less than 100. What number could I be?
4, 16, 36, 64
A sequence starts: 2, 4, 8, 16… What is the 8th term?
256
If x = 2 and y = 3, what is the value of 3xy²?
3 × 2 × 9 = 54
I am a 2D shape. All my sides are the same length. All my angles are the same. But I am not a square. What shape am I?
Equilateral triangle
A garden has a perimeter of 3.6 km. How many meters is that?
Then, if one side is 900 m long, what is the length of the other three sides combined?
3.6 km = 3600 m
3600 – 900 = 2700 m
A train leaves at 11:47 am and arrives at 1:03 pm. How long is the journey?
1 hour 16 minutes
I spent ⅓ of my money on snacks and 40% on books. What fraction of my money is left?
7/30
The sum of three consecutive integers is 96. What are they?
31, 32, 33
You fold a square piece of paper in half to form a rectangle, and then again in half to form a smaller square. How many right angles does the folded shape have?
4
You cut a pizza into 8 equal slices. What angle is each slice?
45°
Replace the * in 2*7 to make the number divisible by 3.
1, 4, or 7
What three numbers give the same answer when added or multiplied?
1, 2, and 3 (1 + 2 + 3 = 6; 1 × 2 × 3 = 6)
Sam is 3 times as old as his younger sister Mia.
In 4 years, the sum of their ages will be 40.
How old is Sam now?
24 years old
If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?
5 minutes
A square floor tile measures 0.5 m × 0.5 m.
How many tiles are needed to cover a floor that’s 5 m by 4 m?
80