Substitute an Integer
Substitute a Fraction
Create an Expression
Create a Phrase
Create an Equation and a Let Statement
(the answers are a let statement and an equation)
100
2 + n where n = (-5)
(-3)
100
1/2 + x where x = 3/4
1 1/4
100
the sum of 4 and a number
4 + n
100
13 - n
one possible solution: 13 take away a number
100
Miki wants to triple her typing rate to 90 words/minute. What is her present rate?
let r represent Miki's present rate 3r = 90
200
3t where t = (-4)
(-12)
200
2m where m = 1/3
2/3
200
10 less than a number
h - 10
200
2y + 3
one possible solution: a number times two then increased by 3
200
In five years Sarah will be 18 years old. How old is she today?
Let s represent Sarah's current age. s + 5 = 18
300
4z - 3 where z = (-2)
(-11)
300
1/2 - k where k = 1/6
2/6
300
Double a number increase by 7
2x + 7
300
a/3 - 4
one possible solution: a number divided by three then decreased by 4
300
There are 78 more boys than girls at Edenwood. There are currently 287 boys attending the school. How many girls are there at Edenwood.
Let g represent the number of girls. 287 - g = 78
400
(-6)/t + (-2) where t = (-2)
1
400
2m + 3z where m= 3/4 and z = 1/3
1 1/2 + 1 =2 1/2
400
the quotient of 8 and a number
8/p
400
16 - 2n
one possible solution: 16 take away double a number
400
Scott has two more fish than Lucy. Together they have 16 fish. How many fish does Lucy have?
Let f represent the number of fish that Lucy has. f + f + 2 = 16
500
2 - 3m + 4 where m = (-6)
24
500
4w + z/3 where w = 5 and z = 3/4
20 + 3/12 =20 3/12 = 20 1/4
500
the sum of three consecutive numbers
n + n + 1 + n + 2
500
2 - (2n + 5)
one possible solution: double a number add 5 and subtract from 2
500
Erin is twice as old as David. The sum of their ages is 39 years. How old is David?
let d represent David's age. 2d + d = 39
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