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Topics 8 & 9

Adding & Subtracting Two Digit Numbers

number line a line that shows numbers in order from left to right
regroup 10 ones can be regrouped to make 1 tens
sum the amount in all after you add
difference the amount that is left after you subtract
addend numbers that are added
addition sentence sentence showing numbers added together to equal a sum example: 3+4=7
subtraction sentence sentence showing numbers subtracted to equal a difference example: 8-4=4
two digit number a number that has a digit in the ones place and the tens place
digit single number (0,1,2,3,4,5,6,7,8,9) All numbers are created using these digits.
Created by: ShelleyQ