Integers
-12+15
3
If x=2, find (3x)+4.
10
A number plus 9 equals 17. What is the number?
8
Write an expression for five more than a number x.
x+5
If the input is 5, and the rule is adding 17, what is the output?
23
If you're at sea level, there's a bird 24 meters up, and a diver at -17 meters, what's the distance between the two?
41 meters
If a=5, find 2a−3.
7
Sarah has twice as many books as Tom. Together they have 18 books. How many books does Tom have?
6
Write an expression for “three times a number a decreased by 4.”
3a−4.
The output/input machine multiplies every number by 4, what is the output if the input is 16?
64
90-(85-23)+200
228
If y=−1, find 4y+6.
2
Solve for x:
x−4=10
14
If y is a number, write an expression for “twice the number plus 100.”
2y+100.
102
(-3)+(5/2)+(3-16)
-13.5
If m=23, find 4m+9.
101
Solve for y:
5y=25
5
Write an expression for “the sum of three times x and four times y, then subtract 6.”
3x+4y−6.
Look at the table. What is the rule?
Input Output
1 5
2 10
3 15
Multiply by 5
(-2+6)-91+(82x6)
405
f x is 7 and y is 51 what is
x + 5 x y - 3
259
solve for x:
5x+7-3+164
x=32
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Output is 22, and the rule is to multiply the input by 4 then subtract 2.
What was the input?
6