Question

670*200+52800:40=
657450:90+83*600=
(612237-240037):40=
70*(100100-99800)=

Answer 1

135320
57705
9305
21000

Answer 2

670*200+52800:40=135320
1)670*200=134000
2)52800:40=1320
3)134000+1320=135320
657450:90+83*600=57105

1)657450:90=7305
2)83*600=49800
3)7305+49800=57105
(612237-240037):40=
=9305
1)612237-240037=
=372200
2)372200:40=9305
70*(100100-99800)=
=21000
1)100100-99800=300
2)70*300=21000