Math Jeopardy!

Mental Math

100

Which number is 10 less than 628?

618

200

285-10=?

275

300

198-100

98

400

Amari does 85 push ups. Evan does 10 fewer push up. How many push up does Evan do?

75

500

Kayla is working with a team to plant 772 trees at a park. They already plant 100 trees. How many more trees do they need to plant?

672

Subtract 3-digit

100

279-157=?

122

200

386-105=?

281

300

Mateo has 725 football cards. He gives away 205 cards. How many football cards does Mateo still have?

520

400

Molly scores 365 points. She loses 124 points. How many points does Molly have left? 

Use base-ten blocks to represent

241

500

How do you represent this problem using BASE-TEN BLOCKS

224-113=?

2 Hundreds, 2 tens, 4 ones. Cross out

1 Hundreds, 1 tens, 3 ones

ANSWER: 111

Decompose

100

DECOMPOSE- Italic number

319-127=?

100+20+7

200

DECOMPOSE- Italic number

516-320=?

300+20+0

300

How can you decompose to find the difference?

Show on the number line

413-256=?

157

        -6                     -50                 -200

<--------------------------------------------->

 157                                                   413

400

614-388=? SHOW ON NUMBER LINE

-4           -70                  -314

<------------------------------------- --------------->

226        230                  300                   614

500

Riley's dad can drive his car 383 miles on a full tank of gas. Riley's mom can drive her car 500 miles on a full tank of gas. How many more miles can her mom drive her car than her dad on a full tank of gas?

117 miles

Count on

100

Using Count on, Which equation us related to 419-158? 

A. 158+419=?

B. 158+?=419

C. ?-158=419

D. 419+158=?

B.158+?=419

200

333-212=

Count On, Use the number line to change and find the difference

121

300

671-352=

Count On  Use the number line to change and find the difference

319

400

Marissa gas 356 e-mail messages in her inbox. She deletes 108 e-mail messages. How many e-mail messages are left in Marissa's inbox? Write an equation to represent the problem. Use the number line to count on.

356-108=248

500

After playing five basketball games, the Rockets scored a total of 368 points  and the blazers scored a total of 475 points. How many more points did the blazers score than the rockets?

475-368=107

Regroup

100

Is regrouping needed? 

172-45

Yes

200

598-378=

Yes

300

What is the difference? 234-125=

109

400

Is regrouping needed? 456-234

No

500

Davis has a box of 842 photos. He puts 426 photos in album. How many more photos are still in the box?

416