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Subtraction with Regrouping Mrs. Hicks -
1. Look at the ones. Ask: Can we take 3 away from 2? If we cant, then we have to regroup.
2. Regroup as needed st : Go next door to the tens and take one away. 7 2 nd : Add the ten to the ones. 1
3. Subtract the ones What is 12 – 3? 9
4. Subtract the tens What is 7 – 5? 2
Now lets review the steps… 1.Look at the ones. Ask: Can we subtract? 2.Regroup as needed: 1. Go to the tens and take one away. 2. Add the ten to the ones. 3.Subtract the ones. 4.Subtract the tens.
We can check our subtraction with addition! st : Move the answer 29 to the top of the addition problem. 2 nd : Move the subtracted number 53 across to complete the addition problem.
Now were ready to add… rd: Add the tens – 1st: Add the ones: nd : Regroup the ten Dont forget to add the regrouped one!
Lets see if we are right… Does the answer of the addition problem 82 match the top number of the subtraction problem? Yes!! They match! We are right!
Great Job! Now its your turn to prove youre the math wizard!
Subtraction with Regrouping Mrs. Hicks Look at the ones. Ask: Can we take 3 away from 2? If we cant, then we have to regroup.
Subtracting By Regrouping By: Priscilla Montgomery Rolling Hills Elementary Huntsville, AL.
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