Question

Обчисли. 72-5×3=... 16÷4×7=... (81-36)÷5=... (13+19)÷4=... 4×(64-55)=... 24÷4+40÷5=

Answer 1

72-5×3=(5×3)=72-15=67

16÷4×7=(16÷4)=7×4=28

(81-36) ÷5=(81-36)=45÷5=9

(13+19) ÷4=(13+19) =32÷4=8

4×(64-55) =(64-55) =9×4=36

24÷4+40÷5=(24÷4) =40÷5=6+8=14