Add one step +
Sub one-step +
Add one-step -
Sub one-step -
Extra
100

d + 4 =12

d=?

What is 8

100

d-6=4

d=?

What is 10

100

d + 3 = -5

d=? 

What is -8

100

d - 5 = -8

d=?

What is -3

100

-2 + b =7

b=?

What is 9

200

d+10=15

d=?

what is 5

200

d-12=20

d=?

What is 32

200

d + 7 = -3

d=?

What is -10

200

d - 10 =-20

d=?

What is -10

200

-6 + y=-6

y=?

What is 0

300

d + 20=40

d=?

What is 20

300

d-20=10

d=?

What is 30

300

d+8=-12

d=?

What is -20

300

d-8= -4

d=?

What is 4

300

8 + t=12

t=?

What is 4

400

d+8=32

d=?

What is 24

400

d-25=50

d=?

What is 75

400

d + 25 =-75

d=?

What is -100

400

d-20=-15

d=?

What is 5

400

-10 -1b =15

b=?

What is -25

500

d+100=500

d=?

What is 400

500

d-400=500

d=?

What is 900

500

d + 20 = = -40

d=?

What is -60

500

d -400=-200

d=?

What is 200

500

-40 - 1k=100

k=?

What is -140