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100

40+8

48

100

15-8

7

100

Ms. Kepner has 18 pencils. She buys 12 more. How many pencils does she have now?

30 pencils

100

400+50+3

453

100

78 [ ] 32

78 > 32

200

20+18

38

200

28-12

16

200

The classroom has 35 chairs. We give 13 chairs to another class. How many do we have left?

22 chairs

200

300+8

308

200

148 [ ] 491

148 < 491

300

48+39

87

300

81-17

54

300

Arie has chewed up 28 toys. Echo has chewed up 12 toys. How many more did Arie chew up than Echo?

16 more toys

300

4+800+20

824

300

82 [ ] 89

82 < 89

400

143+119

262

400

373-148

225

400

I had 41 stickers and then bought 28 more of them. Then I gave away 35 stickers to students. How many do I have now?

44 stickers

400

8+40+100

148

400

489 [ ] 483

489 > 483

500

286+159

445

500

523-187

336

500
The car dealership had 286 cars and then sold 152 cars. Then they got 34 cars delivered to the lot. How many do they have now?

168 cars

500

300+90

390

500

419 [ ] 491

419 < 491