Respuesta :
Answer:
12.8 × 1/4
=128/10×1/4
= 128 × 1
10 × 4
= 128/40
= 128 ÷ 8
40 ÷ 8
= 16/5= 3 1/5
16/5
Step-by-step explanation:
Answer:
Step by step on...How to multiply 12.8 x 1/4
Step-by-step explanation:
First off...1/4 is the same to... .25
so
1. 12.8 x .25 to 12.80
x .25
multiply 5 with zero which is zero
12.80
x .25
0
2. multiply 5 with 8 which is 40 ...put 4 above 2
4
12.80
x .25
00
3. multiply 5 with 2 which is 10 then add 4, which 14. Leave the four and put 1 on top of 1
1
12.80
x .25
4 00
_____________________________________
4. Then multiply 5 with 1 which is still 5 then add one which is 6
12.80
x .25
64 00
_______________________________-
5. then put underneath whatever we have a zero under
12.80
x .25
64 00
0
______________________________________________
6. multiply 2 with 0 which is 0 then 2 with 8 which is 16...put down 6 and put up the number 1 above 2
1
12.80
x .25
64 00
600
____________________________________
7 . multiply 2 with 2 which is 4 then add 1 which is 5 put down 5 and multiply 2 with 1 soo
12.80
x .25
64 00
25600
______________________________
8. then add them up.
12.80
x .25
64 .00
256.00
32000
then move the decimal 4 times to the left
12.80
x .25
3 . -2-0-0-0
-FINAL!
12.80
x .25
3.2
