110
110
1/10 = 10/100. 10/100 + 1/100 = 11/100
Add a 0 onto 100, or add 2 0's onto 10. Multiply by 10 = add a 0 Multiply by 100= add 00 Multiply by 1000 = add 00 Teachers prefere not to say 'add a 0'. This is like a cheat, and does not work for decimals.
-10 and +10.
100 x 23 = 2300 (If timing by 10, simply add a zero. If by 100, add two zeroes.)
add 1 through 10 times 10 then add 10 through 90 and add the answers
100
double and add 10%
One whole.
To find the percent of anything, you change the percent to a decimal, and multiply. Finding the percent of a sum is no different. ex: 10% of (30 + 100) I can use the distributive property to take 10% of 30, then add 10% of 100. .10(30 + 100) = .10*30 + .10*100 = 3 + 10 = 13 In order to see how this works, let's not distribute. .10(30+100) and instead, add 30 +100 first, then take the percent. .10(130) = 13 We get the same answer! You can take the percent of the whole thing, or you can take the percent of the pieces that add up to the whole.
to multiply a number by 10, all you have to do is add zeros at the end of the number. Below are examples: 10*1=10 10*10=100 10*100=1000
12. You can figure this out because 20% of 100= 1/5. You then take 1/5 of 10 and get 2. Finally, you add 2 to 10 and get 12.