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

Explicație pas cu pas:

a) 7×8+6×7-3×7= 7×(8+6-3)=7×11=77

9+5×6-25÷5= 9+30-25÷5= 9+30-5= 34

b) 7×6-12+7×10= 42-12+7×10= 42-12+70= 100

15-15÷3+2×5×5= 15-5+2×5×5= 15-5+50=60

c) 400+5×8+72÷9-48= 400+40+72÷9-48= 400+40+8-48=400

300-64÷8+6×6-28= 300-8+6×6-28=300-8+36-28=300