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Which is bigger 12 over 15 or 4 over 10?
12/15 is bigger than 4/10 or 4/5 is bigger than 2/5
What could you subtract from the number 10 to get an answer that is bigger than 10?
If you subtract a negative number from another number, you always get a bigger number. That is because minus a minus is a plus So you could subtract any negative number from 10 and answer is bigger than 10.
When adding a positive number to a negative number what is a good rule for determining the sign of the sum?
If the negative number is a bigger number, the answer will be negative. Conversely, if the positive number is bigger, the answer will be positive. -20+10= -10 (larger negative number) -10+20=10 (larger positive number)
What number increased by -10 is 5?
15. 5 - -10 = 5 + 10 = 15 → 15 + -10 = 15 - 10 = 5
How do you calculate what percentage a number was increased?
1. Divide the bigger number by the smaller number.e.g. 15 and 10. 15 divided by 10 is 1.52. Subtract 1e.g. 1.5 minus 1 is 0.53. Convert to a percentage by multiplying the answer by 100e.g. 0.5 x 100 = 50%4. The answer is the percentage increase. In the example above, the answer '50%' means that 10 was increased by 50% (of 10) to make 15
