Question

fisa de lucru
1. Calculate cat mai rapid
a) +3-2 +4-6 +21-11
b) - 23 - 12-7-88 +21+5+9+25
c) 84 • (-11) -84• (-24) -84+23)​

Answer 1

a.mai intai calculezi 21-11=10.

2.6+2=8.

3.3-2+4=5

b.mai intai calculezi 88+21=109

2.23-12-7=4

3.25-9+5=21

c. mai intai calculezi 84+23-24=83

2.84×84=7056

3.7056-11=7045

la ultimul exercitiu nam inteles prea bine