Mental Math
The answer to 7 × 8?
What is 56?
The greater number: −3 or −9
What is -3.
7⁄10 − 2⁄10
5/10= 1/2
Write an expression for “five more than a number n”
What is n+5?
The answer to 12 × 15
What is 180?
−8 + 15
What is 7?
⅔ × 9
18/3=6
A letter used to represent an unknown number
What is a variable?
10% of 60
What is 6?
18 ÷ (3 + 3)
What is 3?
A recipe uses ¾ cup of sugar. You make ½ of the recipe. How much sugar do you use?
What is ⅜ cup of sugar?
Solve: x÷5=4
What is x=20?
1¼ + 2¾
What is 4?
A temperature goes from −4°C to 9°C. The change in temperature
What is 13°C?
10/2= 5
Solve: 40−x=18
What is x=22
¾ written as a decimal
What is 0.75?
(20 − 4²) × 2 + 3
What is 11?
⅘ of 25
5/100=20
Five less than twice a number is 25. Find the number.
What is 15?