Question

afla 1/2 , apoi 1/4 din numerele : 8,12,20,16

Answer 1

1/2 din 8=8:2x1=4x1=4
1/2din 12=12:2x1=6x1=6
1/2 din 20=20:2x1=10x1=10
1/2 din 16=16:2x1=8x1=8


1/4 din 8=8:4x1=2x1=2
1/4 din 12=12:4x1=3x1=3
1/4 din 20=20:4x1=5x1=5
1/4 din 16=16:4x1=4x1=4

Answer 2

$\frac{1}{2} *8=\frac{8*1}{2}=\frac{8}{2}=4$
$\frac{1}{2} *12=\frac{12*1}{2}=\frac{12}{2}=6$
$\frac{1}{2}*20=\frac{20*1}{2}=\frac{20}{2}=10$
$\frac{1}{2}*16=\frac{1*16}{2}=\frac{16}{2}=8$

$\frac{1}{4}*8=\frac{1*8}{4}=\frac{8}{4}=2$
$\frac{1}{4}*12=\frac{12*1}{4}=\frac{12}{4}=3$
$\frac{1}{4}*20=\frac{1*20}{4}=\frac{20}{4}=5$
$\frac{1}{4}*16=\frac{1*16}{4}=\frac{16}{4}=4$