Brain Battle: Solve for X

One-Step Addition & Subtraction

100

x+7=15

x=8

200

x−9=12

x=21

300

x+(−14)=6

x=20

400

x−(−11)=20

x=9

500

x+(−25)=−9

x=16

One-Step Multiplication

100

4x=28

x=7

200

−5x=30

x=−6

300

7x=−56

x=−8

400

−8x=−72

x=9

500

−12x=108

x=−9

One Step Division

100

x÷3=6

x=18

200

x÷(−4)=5

x=−20

300

x÷6=−7

x=−42

400

x÷(−9)=−6

x=54

500

x÷(−8)=9

x=−72

Two-Step Challenge

100

2x+3=13

x=5

200

3x−4=17

x=7

300

4x+8=32

x=6

400

5x−12=28

x=8

500

 x/4+7=16

x=36

Fun: Teacher Challenge

100

Ms. Ramirez has 10 pencils and buys 5 more. How many pencils does she have?

15 pencils

200

Ms. Maria has 4 stacks of papers with the same number in each stack. There are 32 papers total. How many are in each stack?

8 papers per stack

300

Mr. Magana buys some school supplies for $6 each and also pays a $4 fee. His total is $34. How many supplies did he buy?

5 supplies

400

Ms. Ramirez has some markers. She gives away 6 markers and divides the remaining markers equally among 3 tables. Each table gets 8. How many markers did she start with?

30 markers

500

Mr. Gratt and Mr. Magana collect 48 books. Mr. Gratt collects twice as many as Mr. Magana. How many books does each person collect?

Mr. Magana: 16 books; Mr. Gratt: 32 books