1.17307: 27+304×217=66609;
1)17,307: 27=641;
2)304×217=65,968;
3)65,968+641=66,609;
2.403×119+27648: 48=48,633;
1)403×119=47,957;
2)27648: 48=576;
3)47,957+676=48,633;
3.(9483+435): 87=114;
1)9483+435=9,918;
2)9,918: 87=114;
4.8908: 68-544: 68=123;
1)8908: 68=131;
2)544: 68=8;
3)131-8=123;
5.3105: 23+186,796: 82=2,413;
1)3105: 23=135;
2)186,796: 82=2,278;
3)2,278+135=2,413;
6.159,600: 42-209×5=2,755;
1)159,600: 42=3,800;
2)209×5=1,045;
3)3,800-1,045=2,755;
1.17307: 27+304×217=66609;
1)17,307: 27=641;
2)304×217=65,968;
3)65,968+641=66,609;
2.403×119+27648: 48=48,633;
1)403×119=47,957;
2)27648: 48=576;
3)47,957+676=48,633;
3.(9483+435): 87=114;
1)9483+435=9,918;
2)9,918: 87=114;
4.8908: 68-544: 68=123;
1)8908: 68=131;
2)544: 68=8;
3)131-8=123;
5.3105: 23+186,796: 82=2,413;
1)3105: 23=135;
2)186,796: 82=2,278;
3)2,278+135=2,413;
6.159,600: 42-209×5=2,755;
1)159,600: 42=3,800;
2)209×5=1,045;
3)3,800-1,045=2,755;