Writing Equations
Substitution
Writing and Solving
Solving
Word Problems
100

A number increased by seven

n + 7 

100

a=2, b=3, c= 4

b+a+c

9

100
A number added to three is twenty-one

3+n=21

n=18

100

n+12=38

n=26

100

Yesterday Tad had $38 dollars. He did some work for his grandma and now has $72. How much did his grandma pay him?

38+m=72

m=34

200

The quotient of five and a number

5/n 

200

a=5, b=9, c=10

2+ab

47

200
Thirty decreased by a number is eight

30-n=8

n=22

200

a-43=17

a=60

200

Stefanie is making cookies for a bake sale. She needs five dozen cookies. If she has already made 24 cookies how many more does she need to make?

24+c=60

c=36

300

The product of a number and eight 

8n

300

a=9, b=11, c= 13

ac+b

128

300

A number split by three is nine

n/3=9

n=27

300

4b=64

b=16

300

Angie has a box of 168 markers at her house. She split the markers into eight colors. If there were the same amount of each color, how many markers would she have of each?

168/8=m

m=21

400

Twice a number that is taken away from twenty

20-2n

400

n=4, m=8, r=12

rnm+m

392

400
Twice a number increased by four is sixteen

2n+4=16

n=6

400

s/9=14

s=126

400

Kim has thirty five cook books in her kitchen. If she wanted to distribute the books out evenly to her five children, how much would each child get?

35/5=c

c=7

500

seventy five less than a number split by 2

n/2-75

500

a=2, b=8, c= 16

abc+c/b

258

500
The total of trice a number and seven is forty three

3n+7=43

n=12

500

r/15=240

r=16

500
There were forty seven pencils in the pencil jar. If Ms.McCumber increased the pencils by nine, then shared half with Ms. Bielski how many pencils does Ms.McCumber have now? 

(47+9)/2=p

p=28

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