Finding Sums
4 + ____ = 17
13
12 – ____ = 3
9
octagon
If the question says, "increase by", what operation should you use?
Example: 5 is increased by 3.
You would add
8 degrees
21 + 15 = _____
36
32 – 15 = _____
17
I have 3 sides.
Triangle
If the question says to take away, what would you use?
Example: 10 take away 3 is 7
subtract
If Mr. Hoogsteen has 3 guitars, 2 drum sets and 5 flutes. How many instruments does he have?
10 instruments
5 + 5 + 5 + 5 + 6 = _____
26
36 = ____ – 10
46
What is the difference between a rectangle and a square?
A rectangle has two different side lengths. In a square, all sides are the same.
The sum of 4, 6 and 5 is 15.
Did we add or subtract?
add
If you paid for a $6.25 purchase with a $10 bill, how much change would you get back?
12 + 15 + 13 = _____
40
65 – 25 = _____
What shape was made famous by Rubik's?
a cube
In the following, does difference mean to add or subtract?
The difference between 10 and 2 is 8.
subtract
If you had $20 and split it even between 5 friends, how much would each get?
$4
102 + 104 + 108 = ____
314
73 – 18 = _____
55
cylinder
Would you need to add or subtract for the question:
Will has 5 dollars. Armaan has 10. Miguel has $15. How much do they have in total?
add
Rushing to get to Florida for his vacation, Mr. Robertson drove 4 straight hours at 110 km per hour. How far did he drive?
440 km