Show:
Multiplication
Rounding
Addition
Subtraction
100

5X4=

20

100

5 rounded to the nearest 10

10

100

50+15=

65

100

100-10=

90

200

3X3=

9

200

29 rounded to the nearest 10

30

200

184+6=

190

200

456-123=

333

300

10X10=

100

300

620 rounded to the nearest 100

600

300

220+350=

370

300

820-610=

210

400

30x9=

270

400

214 rounded to the nearest 10

210

400

167+250=

417

400

200-129=

71

500

25 x 11 =

275

500

1,049 rounded to the nearest 100

1,000

500

199+456=

655

500

1,000-59=

941