Question

calcula utilizando la propiedad distributiva
1. 3(8 + 4) =
2. 3(5 − 4) =
3. (2 + 5)(3 + 4) =
4. (1 + 5)(7 + 9) =
5. 2(5 − 4) + (7 × 3) + 5(1 + 4) =
6. 4(7 − 3) + 5(3 + 8) =
a) 60 × (13 + 2) = 60 × 13 + 2
b) 40 × (8 + 7) = 40 × 8 + 40 × 7
c) (13 + 7) × 10 = 13 × 10 + 7 × 10
d) (8 + 7) × 5 = 8 × 7 × 5 ayuda porfa

Answer 1

Explicación paso a paso:

1. 3(8 + 4)

=24+12

=36

2. 3(5 − 4)

=15-12

=3

3. (2 + 5)(3 + 4)

=6+8+15+20

=49

4. (1 + 5)(7 + 9)

=7+9+35+45

=96

5. 2(5 − 4) + (7 × 3) + 5(1 + 4)

=10-8 + 21+5+20

=48

6. 4(7 − 3) + 5(3 + 8)

=28-12+15+40

=71

a) 60 × (13 + 2)

=780+120

=900

b) 40 × (8 + 7)

=320+280

=600

c) (13 + 7) × 10

=130+70

=200

d) (8 + 7) × 5

=40+35

=75