ADD
ROUND TO NEAREST 10

SUBTRACT
STANDARD FORM
MULTIPLICATION
100

112+841

953

100

548

550

100

841-112

729

100

500+40+6

546

100

24 X 6=

144

200

548+318

866

200

949

950

200

548-318

230

200

200+80+3

283

200

28 X 6=

168

300

174+283

457

300

990

1000

300

283-174

109

300

900+40+9

949

300

33 X 6=

198

400

462+209

671

400

462

460

400

462-209

253

400

300+80+8

388

400

55 X 5

275

500

388+949

1,337

500

112

100

500

949-288


661

500

400+60+2

462

500

81 X 9=

729

M
e
n
u