Just add six.
first use 5*6=30 then add 6*1=6 the product of 6*6 is 36
You can add 50+6 and it equals 56
That's easy, just half it. 420 divided by 2 (5 is half of 10) which equals 210. (1) To check my answer, I did... 42 x5 (5 x 2=10 (carry the one), then 5 x 4=20 + 1= 120) ---- 210
You can use the following formula: C=2r∙3.14 Therefore C=2∙14∙3.14 Find the product of 2 and 14 which equals 28. Now C=28∙3.14 Find the product of 28 and 3.14 which equals 87.92. Therefore the circumference is 87.92ft.
You could use the process of multiplication. It's just a suggestion.
you would take the answer 420 and split in half
first use 5*6=30 then add 6*1=6 the product of 6*6 is 36
15 is half again as much as 10, so the new product would similarly increase by 50%.
You double the product of 2x8.2x8 equals 16. 16 doubled which equal 16x2 equals 32.4x8 equals 32.
You could use it because it shows that its just 7 times 8 flipped!
first use 5 times 6 = 30 than add 6 times 1 = 6 so the product of 6 times 6 is 36
The second is half of the first.
You can add 50+6 and it equals 56
That's easy, just half it. 420 divided by 2 (5 is half of 10) which equals 210. (1) To check my answer, I did... 42 x5 (5 x 2=10 (carry the one), then 5 x 4=20 + 1= 120) ---- 210
It would seem more sensible to do the multiplication directly.
it any number can multiply by the same its commutative
63