efectuaza: 48+445=493
1100-600=500
500-370=130
19527+500=20027
4444-500=3944
calculati asociind termemii in mod convenabil;
65+84+35+44+56+16=65+35+84+16+44+56=100+100+100=300
418+315+99+455+82+501=418+82+315+455+99+501=500+770+600=1870
27+295+94+105+23+206=27+23+295+105+94+206=50+400+300=750
2040+1580+8060+5674+1420=2040+8060+1580+1420+5674=10100+3000+5674=18774
exerciti circulare.rezolvati primul exercitiu ,apoi exerciyiul care incepe cu nr obtinut.continuand astfel , veti ajunge inapoi la primul exercitiul.
1095+307-52=1350
1350-870-283=197
197+2330+503=3030
3030+1947-2467=2510
2510-1092+8582=10000
10000-(4405+4500)=1095
1095+307-52=1350