Adding
Subtracting
Rounding
Word Problems!
100

Use mental math to solve: 325 + 114 

439

100

Use mental math to solve: 128 - 19

109 

100

Round to the nearest tens 

432

430 

100

A store sold 436 Pokemon cards last week and 28 cards today. Use mental math to find how many Pokemon cards were sold in all. 

464 Pokemon Cards 

200

Use mental math to solve: 228 + 171 

399

200

Use mental math to solve: 784 - 515 

269 

200

Round to the nearest tens 

346

350 

200

Noah bought a lego set that cost $235. He had a coupon for $40 off. How much was the lego set after the coupon? 

$195

300

Use mental math to solve: 252 + 44 

296 

300

Use mental math to solve: 400 - 250 

150 

300

Round to the nearest hundreds 

876

900 

300

Round to the nearest tens place. 

Bob wants to 352 cookies, about how many cookies does he have? 

350 cookies 
400

Use mental math to solve: 236 + 243 

479 

400

Use mental math to solve: 887 - 18

869

400

Round to the nearest hundreds 

629

600 


400

Elijah wrote the following number pattern. What is the next 2 numbers in the pattern? 

632, 532, 432...

632, 532, 432, 332, 232

500

Use mental math to solve: 651 + 150 

801 

500

Use mental math to solve: 430 - 216 

214

500

Round to the nearest hundreds 

980 

1000

500

In August, Ryan saved $242. In September he saved $80 less than August. How much did he save in all? 

$404 

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