Question

14 Calculează:
a) 17+10.3;
b) 72 - 32:4;
c) (45:9+ 18:3). 10; d) 210:7 +63: 7;
e) (210+63): 7;
f) 19 +20 + 105:5;
g) 15+ (25 +8.15): 5 - 22.2.​

Answer 1

Explicație pas cu pas:

a)17+10×3=17+30=47

b)72-32:4=72-8=64

c)(45:9+18:3)=5+6=11

d)210:7+63:7=30+9=39

e)(210+63):7=273:7=39

f)19+20+105:5=19+20+21=39+21=60

g)15+(25+8×15):5-22×2=

15+(25+120):5-22×2=

15+145:5-44=

15+29-44=

44-44=

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