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Add & Subtract
Riddles
Math Vocab.
100
3:9
100
percent increase of 16 to 20.
25%
100
(-33) + 47 =
Answer: 14
100
Ava goes to the supermarket and buys 10 potatoes. Unfortunately, on the way back home, all but 9 get ruined. How many potatoes are left in a good condition?
Answer: 9
100
The number that remains after subtraction
Difference
200
9 Chocolate Cookies
200
What is 40% of 150
60
200
(-30) - (-82) =
Answer: 52
200
Which number stays the same no matter the number you multiply it with?
Answer: 0
200
What is the top number in a fraction?
Answer: Numerator
300
Jimmy took a total of 5 tests last month in his math class, he scored the following grades on his test:
100, 97, 65, 100, 85
What is his total average in the class?
His total average is 89.4
300
A 3D shape with ONE base and triangle faces that meet together to form a point at the top.
Pyramid
300
42 - (-20) =
Answer: 62
300
Emma has 3 mangoes and 2 pears in one hand and 2 mangoes and 4 pears in the other. How many pears and mangoes did Emma have?
Answer: 5 mangoes and 6 pears
300
An approximate calculation
Answer: an estimate
400
Simplify the Expression.
10x-8x+2+10
2x+12
400
Solve 4+8÷2x3-1=
15
400
(-662) - 491=
Answer: -1,153
400
When I was 6, my sister was half my age. Now, I'm 70. How old is my sister?
**DOUBLE POINTS**
67 years old
400
Any natural number or its negative, or zero
Answer: Integer
500
(2-2) + 7
7
500
32 - 4 + 12(2+2)
53
500
(-7)- (-8)=
Answer 1
500
It is always in front of you but cannot be seen
The future
500
A number that has no factor but itself and 1
Answer: Prime
600
Simplify the Expression
4(2b+2)-3
8b+5
600
Solve the equation to find the value of the variable.
f + 2.6 = 5.8
f = 3.2
600
(987)-(-403) =
Answer: 1390
600
If seven people meet each other and each shakes hands only once with each of the others, how many handshakes will there have been?
Answer: 21 handshakes
600
What is the answer to a division problem called?
Quotient
700
What is the Area of a rectangle if the width is 5, and the length is 9?
The area of the rectangle is 45
700
3/5 + 2/7
31/35
700
600 - (-927)=
Answer: 1,527
700
Riddles to Ponder
Can you figure out the answers to the riddles?
I come once in a minute, Twice in a moment, But never in a thousand years
the letter M
700
A quantity obtained by the addition of a group of numbers
Answer: Sum
800
What is the value of the expression below when Y=8?
3y + 6y =
72
800
Corwin buys 7 boxes of markers with 8 in each box. Mila buys 6 boxes of markers with 12 markers in each box. How many markers did Corwin and Mila buy in all?
7 x 8 = 56
6 x 12 = 72
56 + 72 = 128
800
839+(-425) =
Answer: 414
800
It takes 10 men two months to dig a tunnel. How many days will it take 20 men to dig the same tunnel?
Answer: 0, the tunnel’s already dug!
800
A measure of how likely it is that some event will occur
Answer: probability