By Lucille Caron

Publication via Caron, Lucille, St Jacques, Philip M.

**Read Online or Download Addition and Subtraction (Math Success) PDF**

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**Extra resources for Addition and Subtraction (Math Success)**

**Example text**

600 is 6 hundreds. It is also 5 hundreds ϩ 10 tens. 41 19. Subtracting Greater Numbers Subtracting Greater Numbers without Regrouping In subtraction without regrouping, the digits in the subtrahend are less than the digits in the minuend. Subtract from right to left, starting with the ones column. Subtract 49,754 Ϫ 2,341 Step 1: Arrange the numbers underneath each other. 49,754 minuend Ϫ2,341 subtrahend Step 2: Subtract ones. 49,754 Ϫ2,341 3 Step 3: Subtract tens. 49,754 Ϫ2,341 13 Step 4: Subtract hundreds.

Exact Difference 4 13 Find the exact difference: 5 3 8 Ϫ6 4 4 7 4 Compare the exact difference with the differences you found when rounding. Greatest Place Value 400 Rounding to Tens 480 Exact Difference 474 Rounding to the tens place is closer to the exact difference than rounding to the greatest place value. Use your estimation skills to help someone do the weekly shopping. Estimate the total cost before going to the checkout. How close did you come to the actual price? 45 21. Subtraction Properties As you read on page 18, there are three basic addition properties: 1.

0 1 2 3 4 5 6 You can expand this set by adding negative numbers to the left of zero on the number line. These are the set of integers. – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 3 4 5 6 Integers to the right of zero are called positive numbers. Integers to the left of zero are called negative numbers. Adding Like Integers Like integers are numbers with the same sign. When adding two integers with like signs, add the numbers as whole numbers. The sum will have the sign of the two integers. To add two positive numbers, write them with or without the positive sign.