The method I'll be presenting is the old traditional way, hehe.
33 x 76 ——
1) 3 x 6 is 18.
1 33 x 76 —— 8
2) Again, 3 x 6 is 18, adding 1 (since you carry the 1 in 18 over) is 19.
1 33 x 76 —— 198
3) 3 x 7 is 21.
2 1 33 x 76 —— 198 1
4) Once again, 3 x 7 is 21, plus 1 is 23.
2 1 33 x 76 —— 198 231 ———
4) Now we add 198 + 231.
33 x 76 —— 1 198 (PS. carry the 231 one in 1+9) ——— 2508
5) Now we round, in this case we shall round to the nearest thousand since it makes sense too.
2,508 ^ Take a look at the thousands place, which is two.
2,508 ^ To the right of 2 is 5. Any number to the right between 5-9 you add one to the place value and zap the rest of the numbers to the right to 0. So...
Logically if you double weight on something it means that you are adding the exact same weight as the first object to the same thing to make it twice the weight as the original, so yes... the weight will double if the length is doubled
