Question

Am nevoie urgent va rog

Answer 1

1) ordinea efectuarii operatiilor

(25+10):5=35:5=7

(28-8):4=20:4=5

(25+10):5=25:5+10:5=5+2=7

(28-8):4=28:4-8:4=7-2=5

2 a. (14+35):7=14÷7+35:7=2+5=7

                    =49:7=7

(40+16)/8=40/8+16/8=5+2=7

sau 56/8=7

b. (30-18)/6=12/6=2

30/6-18/6=5-3=2

(63-27)/9=63/9-27/9=7-3=4

sau 36/9=4

(15+9+6)/3=30/3=10

15/3+9/3+6/3=5+3+2=10

(16-8+4)/2=12/2=6

16/2-8/2+4/2=8-4+2=6

3) 25 kg +15 kg =40 kg

40 kg / 5 kg = 8 pungi