Download Addition and Subtraction (Math Success) by Lucille Caron PDF

By Lucille Caron

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

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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. 49,754 Ϫ2,341 413 Step 5: Subtract thousands.

8 7 Step 2: Regroup 1 tenth for 10 hundredths. Subtract hundredths. 5 . 6 0 Ϫ0 . 8 7 3 5 10 4 Step 3: Regroup 1 one for 10 tenths (10 ϩ 5 ϭ 15 tenths). Subtract tenths. 4 Step 4: Place the decimal point in the difference. Subtract ones. 15 10 5 . 6 0 Ϫ0 . 8 7 7 3 15 10 5 . 6 0 Ϫ0 . 8 7 4 . 7 3 I can do this! In some countries a comma is used instead of a decimal point. For example, the number nine and seven tenths would be written as 9,7. 7. Find out which countries use which system. Are there other ways in which decimals are written?

It tells you the total number of parts there are. numerator 1 ᎏᎏ ϭ ᎏ ᎏ denominator 2 Adding Like Fractions Like fractions are fractions with the same, or common, denominator. For example, ᎏ1ᎏ and ᎏ3ᎏ are like fractions because they have 4 4 a common denominator of 4. Add ᎏ1ᎏ ϩ ᎏ3ᎏ 4 ϩ 4 Step 1: Add the numerators and place them over the common denominator. 1 ϩ 3 numerators ᎏᎏ 4 denominator Step 2: Find the sum. 1+3 4 ᎏᎏ ϭ ᎏᎏ 4 4 Step 3: Reduce to lowest terms. 4 ᎏᎏ is the same as one 4 whole. 1 ᎏᎏ 4 4 ᎏᎏ 4 ϭ1 ϩᎏ3ᎏ ϭ 1 4 When fractions have the same denominator, that denominator is called the common denominator.

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