Question

Calculează: a) (18+2×7):(12:2+8:4)....b) 24-24:3×(72:9-2×3):4×5....c) 36:6+4×2×5-(0
20-12:3)....d) 42:7+(6+6):2-24:(5+3).....e) (25+20):5-(19+5):8....f) 10+(10:10+10)-(10×1+10).Va rog ajutati-ma clasa a 3 a multumesc ! ​

Answer 1

Răspuns:

a)(18+2×7):(12:2+8:4)

(18+14):(6+2)

32:8=4

b) 24-24:3×(72:9-2×3):4×5

24-24:3×(8-6):4×5

24-24:3×2:4×5

24-8×2:4×5

24-16:4×5

24-4×5

24-20

4

36:6+4×2×5-(20-12:3)

36:6+4×2×5-(20-4)

36:6+4×2×5-16

6+8×5-16

6+40-16

46-16=30

42:7+(6+6):2-24:(5+3)

42:7+12:2-24:8

6+6-3

12-3=9

(25+20):5-(19+5):8

45:5-24:8

9-3=6

10+(10:10+10)-(10×1+10)

10+(1+10)-(10+10)

10+11-20

21-20 =1

Answer 2

Răspuns:

a)(18+2×7)÷(12÷2+8÷4)=

(18+14)÷(6+2)=

32÷8=

4

b) 24-24÷3×(72÷9-2×3)÷4×5=

24-24÷3 ×(8-6)÷4×5=

24-24÷3×2÷4×5=

24-8×2÷4×5=

24-16÷4×5=

24-4×5=

24-20=

4

c)36÷6+4×2×5-(20-12÷3)=

36÷6+4×2×5 -(20-4)=

36÷6+4×2×5-16=

6+8×5-16=

6+40-16=

46-16=

30

d)42÷7+(6+6)÷2-24÷(5+3)=

42÷7+12÷2-24÷8=

6+6-3=

12-3=

9

e)(25+20)÷5-(19+5)÷8=

45÷5-24÷8=

9-3=

6

f)10+(10÷10+10)-(10×1+10)=

10+(1+10)-(10+10)=

10+11-20=

21-20=

1