Mental Math Jeopardy!

add

100

247+10

What is 257

200

84+5

What is 89

300

237+3

What is 240

400

510+435

What is 945

500

938 + 61

What is 999

add/regroup

100

964+16

What is 980

200

82+99

What is 91

300

236+98

What is 254

400

997+238

What is 658

500

698+429

What is 947

subtract

100

15-9

What is 6

200

20-15

What is 5

300

380-70

What is 310

400

300-150

What is 150

500

298-120

What is 178

subtract/regroup

100

34-19

What is 15

200

129-38

What is 91

300

185-79

What is 106

400

462-139

What is 323

500

234-128

What is 106

story problems

100

I have 16 pens. You have 12 pens. How many do we have in all?

What is 28 pens

200

You have 28 toy cars. I have 46 toy cars. How many more cars do you need to have the same amount that I do?

What is 18 more cars

300

Thirteen people are in our math group. How many hands are there? How many fingers?

What is 26 hands and 130 fingers.

400

There are 156 tickets in all to be given away. Only 79 people used the tickets. How many tickets were left?

What is 77 tickets

500

I baked 1 dozen cupcakes. Each cupcake had 2 cherries on top. I ate the cherries off 2 of the cupcakes. How many cherries are left?

What is 20 cherries