Question

Calculeaza:
a)
7×8+6×7-3×7
9+5×6-25÷5
b)
7×6-12+7×10
15-15÷3+2×5×5
c)
400+5×8+72÷9-48
300-64÷8+6×6-28
​

Answer 1

Răspuns:

a) 7×8+6×7-3×7 =56+42-21

=98-21

=77

9+5×6-25:5 =9+30-5

=39-5

=34

b) 7×6-12+7×10=42-12+70

=30+70

=100

15-15:3+2×5×5=15-5+10×5

=15-5+50

=10+50

=60

c) 400+5×8+72:9-48=400+40+8-48

=440+8-48

=448-48

=400

300-64:8+6×6-28=300-8+36-28

=292+36-28

=328-28

=300