Question

8130:30-2640:10

900100-(735-184)х80

60997+(6012+6228):30

Answer 1

8130:30-2640:10=7
1)8130/30=271

2)2640/10=264

3)271-264=7

900100-(735-184)х80=856020
1)735-184=551
2)551*80=44080

3)900100-44080=856020

60997+(6012+6228):30

1)6012+6228= 12240

2)12240/30= 408

3)60997+408= 61405

Answer 2

а)8130:30-2640:10= 7⇔1)8130:30=271, 2)2640:10=264, 3)271-264=7.

б)900100-(735-184)*80=856020⇔1)735-184=551, 2)551*80=44080, 3)900100-44080=856020.

в)60997+(6012+6228):30=61405⇔1)6012+6228=12240, 2)12240:30=408, 3)60997+408=61405.