Easy
Medium
Difficult
tricky
for luck
100

22-7

15

100

A farmer has 4 boxes with 35 apples in each box.
How many apples does the farmer have in total?

140

100

420 − 187 =

233

100

600 − 289 =

311

100

A bag has 100 marbles.
40 are red, 35 are blue, and the rest are green.
How many green marbles are in the bag?

25

200

12-5

7

200

134 − 57 =

77

200

365 − 198 =

167

200

750 − 468 =

282

200

999 − 456 =

543

300

40-4

36

300

200 − 86 =

144

300

500 − 276 =

224

300

A number is tripled and then 45 is added.
The result is 180.
What was the original number?

 tripled-утроенное число 

(45 × 3 = 135, 135 + 45 = 180)

300

888 − 379 =

509


400

50-25

   

25

400

175 − 98 =

77

400

A school bought 360 pencils.
They packed them equally into 6 boxes.
How many pencils are in each box?

60

400

910 − 586 =

324

400

777 − 268 =

509

500

Tom had 90 stickers. He gave 25 stickers to his friend.
How many stickers does Tom have now?

65

500

160 − 75 =

85

500

390 − 247 =

143

500

700 − 349 =

351

500

1000 − 678 =

322

M
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