2.
1)11-10.2175=0.7825
2)11-7.87=3.13
3)0.7825:3.13=0.25
4)0.07*0.5=0.035
5)0.035+2.746=2.781
6)3*89=267
7)6.7*0.5=3.35
8)1.52+267=268.52
9)268.52-3.35=265.17
10)0.25+265.17=265.42
11)6.5-7=-0.5
12)265.42:(-0.5)=-530.84
1.
1)2.781:2,060=1.35
2)7.825:3.130=2.5
3)3,885:1.850=2.1
4)4.578:3.270=1.4
5)1.35+2.5=3.85
6)3.85+2.1=5.95
7)5.95+1.4=7.35
8)7.35*0.4=2.94
9)2.94*0.25=0.735