ADDITION AND SUBTRACTION What Is Addition and Subtraction? Addition is combining two or more numbers. The term used for addition is plus. When two or more numbers, or addends, are combined they form a new number called a sum. Subtraction is “taking away” one number from another number. The term is minus. The number left after subtracting is called a difference. How to Add and Subtract Addition 1. Line up the addends so the digits with the same place value are in the same columns. 2. Add the ones. Regroup if necessary. 3. Add the tens. Regroup if necessary. 4. Add the hundreds. 1 1 Example: 789 9 + 4 = 13 + 54 1 ten and 3 ones 843 © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Subtraction 1. Line up the numbers so the digits with the same place value are in the same columns. 2. Subtract the ones. Regroup if necessary. 3. Subtract the tens. Regroup if necessary. 4. Subtract the hundreds. Regrouping, or borrowing, is used when the 2nd number is larger than the 1st number in a subtraction problem. Borrowing means to take a group of tens from the next greatest place to make the number great enough to complete the subtraction problem. 8 1 Example: 293 - 87 206 Try This! Addition 91 124 + 4 + 17 Subtraction 82 566 - 6 - 97 © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.