HELPPPPPPPPP please (7th grade math)?

Question

find the product then simplify!!!!!!!!!

1.) 1/8 x 3/7
2.) 4/5 x 10/11
3.) 6/7 x 15/16
4.) 7/10 x 25/28
5.) 12x 3/4

SHOW WORK SIMPLIFY AND THANKS IN ADVANCE

Answer 1

3/56
40/55=8/11
90/112=45/56
175/280=35/56
36/4=9

me

Answer 2

Number 1:
1/8 x 3/7
(1 x 3) / (8 x 7)
3/56

Number 2:
4/5 x 10/11
(4 x 10) / (5 x 11)
40/55
Divide both top and bottom by 5:
8/11

Number 3:
6/7 x 15/16
(6 x 15) / (7 x 16)
90/112
Divide both top and bottom by 2:
45/56

Number 4:
7/10 x 25/28
(7 x 25) / (10 x 28)
Notice that the 7 on top can be divided with the 28 on the bottom (same with the 25 and the 10):
(1 x 5) / (2 x 4)
Much easier numbers to multiply:
5/8

Number 5:
12 x 3/4
12 is the same as 12/1:
12/1 x 3/4
(12 x 3) / (1 x 4)
Same as for Number 4, notice that the 12 and the 4 can be divided by each other:
(3 x 3) / (1 x 1)
Much easier, again :)
9/1
9

Hope it wasn't too confusing :)

Answer 3

(1) 1/8 x 3/7 =3/56

(2) 4/5 x 10/11= 4/1 x 2/11 (5 and 10 cancel out each other) =8/11

(3) 6/7 x 15/16 = 90/112 (multiply across; then divide by 2)=45/56

(4) 7/10 x 25/28 = (cancel out 10 & 25; 7 & 28)= 1/2 x 5/4=5/8

(5) 12 x 3/4 = 12/1 x 3/4 (cancel out 12 & 4) = 3/1 x 3/1 or 3 x3=9

Answer 4

these are so easy! I will try to show you how to do them rather than just supply answers...I hope that you appreciate it.
I will use differnt numbers...sorry!

2/3 x 3/8 *multiplication of fractions*
I usually write the 2 over the 3, so that the line between is completely horizontal. I will call the 2 and the three, the first.
and the 3 and the 8, the second.
multiply the 2 x the 3 (firsts)= 6/
multiply the seconds (3x8=24) = /24 so you get 6/24
6/24 is only part way to being the answer because it can be reduced or simplified.
what number/s can the 6 and the 24 be divided by evenly? well, they are both even numbers, so you could use 2, or if you know multipication facts, you know that 6 is the best divisor. either way, you have to reduce untill you can no longer do so.

6/24=3/12 (now you must divide by 3, because it's common to both numbers)=1/4
or if you divide both numbers (6/24) by 6, you get 1/4

Answer 5

When multiplying fractions, multiply the numerators together and put the result over the product of the denominators. In your first example, the answer is (1 x 3) / (8 x 7) = 3/56. Then, try to simplify by dividing the numerator and denominator by the same whole number. In this case, 3/56 is in simplest form.

In your second example, multiplying the numerators and denominators, you get 40/55, and this fraction can be simplified by dividing the numerator and denominator by 5. Doing so, you get 8/11. This fraction can't be further reduced, so it's in its simplest form.

The rest of your problems can be solved in the same way.

Answer 6

1/8 x 3/7 is the same as (1x3)/(8x7) so that equals 3/56

4/5 x 10/11 = (4x10)/(5x11) = 40/55 and simplfies to 8/11

...I'm boerd now T.T