Question

1- Efetue as multiplicações:
a) 3x1/4
b) 4x1/8
c) 8x1/20

2- Calcule

a) 1/3 de 5

b) 2/5 de 9

c) 4/7 de 8

d) 6/8 de 4

e) 1/2 de 90

f) 1/4 de 100​

Answer 1

1-

(3×1)/4=0,75

(4×1)/8=0,5

(8×1)/20=0,4

2- a-1/3×5=5/3=1,66

b-2/5×9=18/5=3,6

c-4/7×8=32/7=4,57

d-6/8×4=24/8=3

e-1/2×90=90/2=45

f-1/4×100=100/4=25