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How is it possible to subtract a number from 100 and get a result that is greater than 100?
Subtract a negative, eg 100 - (-1) = 101.
Tell how you would decide if 9899989 is greater than or less than 9898998?
Look at the numbers starting with the first, then the second. They are the same 98. Look at the third numbers, they are the same 9. Then the fourth number, the first number has 9 and the second has an 8. So the first number is the greater. You can also subtract them and if you need to get a positive number, the top number is greater.
What do you get when you subtract a negative by a negative?
It's either positive or negative depending on the number that is greater than the second number. Example subtract 10 from 20 the answer is 10. 20 as being the greater than 10. Another example subtract 5 from -10 the answer is -15. -10 as being the greater than 5. Take note when subtracting positive and negative integers you change the sign of the subtrahend.
What is the answer you get when you subtract?
it depends if the numbers are positive or negative. if its a positive minus a negative, or switched, it will be the sign of the greater number.
What regroup mean in subtraction?
Regrouping in subtraction means that if you can't subtract because the digit on the bottom has a greater value than the digit on the top (such as 3-6), you have to "regroup" and subtract on from the top digit to the left of the digits your working with and then add a ten to the top digit your working with. Finally, you subtract. (645-9=630+15-9) Hope that makes sense!
