5/7 x 7/8 is 5/8
four
5/6 times 7/8 is 35/48
7/8 x 5 is 4 3/8
5 8ths 7/8 x 5/7 = 35/56 = 5/8
You can, if you have a square with side 5 you can multiply 5*5=25 or you can add 5+5+5+5+5=25 If you want to do this just take one of the numbers and add it to itself the other numbers times. so if you have 7*8 you add 7 to itself 8 times, so add 8 7's 7+7+7+7+7+7+7+7=56 or add 7 8's 8+8+8+8+8+8+8=56 Multiplying is much easier.
8 times with a remainder of 5.
8, remainder 5
5/8 times 56 = 5 x 56/8 = 5 x 7 = 35
5/8 x 4/7 is 5/14
5/8 * 3/7 = 15/56
7/8 x 4/5 = 28/40 or 7/10