All About Decimals
Mathematics, Grade 3
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Adding Decimals Add 2.74 + 1.52 2.74 + 1.52 Subtract 2.74 – 1.52 Subtracting Decimals Step 1 Step 2 Step 3 Step 4 Step 1 Step 2 Step 3 Step 4 2.7 4 + 1.5 2 6 2.74 + 1.52 26 2.74 + 1.52 4.26 1 1 2.74 – 1.52 2.74 – 1.52 2 2.74 – 1.52 22 2.74 – 1.52 1.22 ones tens tenths hundr eds hundr edths ones tens tenths hundr eds hundr edths 1 2 1. 2 0 1 1. 3 2 1. 4 0 1. 0 4 0. 7 8 0. 7 0 7 10 7 10 1.04 1.04 0.78 0.78 1.4 0.7 1.4 0.7 4 100 4 100 100 78 78 100 1 2 1. 2 0 1 1. 3 2 1. 4 0 1. 0 4 0. 7 8 0. 7 0 Decimals & Fr actions: Place Value Ordering & Comparing Decimals Decimal numbers are another way of writing fractions or mixed numbers. seven tenths one and four tenths seventy - eight hundredths one and four hundredths • The numbers to the left of the decimal point are whole numbers. • The numbers to the right of the decimal point are parts or fractions of whole numbers. • Line up the decimal points. • Compare the digits in each column, starting on the left. One hundr ed twenty-one and two tenths Eleven and thirty-two hundr endths One and four tenths One and four hundr endths Seven tenths Seventy-eight hundr endths Hundredths Tenths 4 10 4 10 Base Blocks Fraction Decimal Word Form Base Blocks Fraction Decimal Word Form Line up the decimal points. Add the hundredths and regroup if needed. Add the tenths and regroup if needed. Add the ones. Place the decimal point in the sum. Line up the decimal points. Subtract the hundredths and regroup if needed. Subtract the tenths and regroup if needed. Subtract the ones. Place the decimal point in the difference. © Copyright NewPath Learning. All Rights Reserved. 93-4308 www.newpathlearning.com All About Decimals
Adding Decimals Add 2.74 + 1.52 2.74 + 1.52 Subtract 2.74 – 1.52 Subtracting Decimals Step 1 Step 2 Step 3 Step 4 Step 1 Step 2 Step 3 Step 4 2.7 4 + 1.5 2 6 2.74 + 1.52 2 2.74 + 1.52 4 . 1 1 2.74 – 1.52 2.74 – 1.52 2 2.74 – 1.52 2 2.74 – 1.52 1. ones tens tenths hund reds hund redths ones tens tenths hund reds hund redths Decimals & Fr actions: Place Value Decimal numbers are another way of writing fractions or mixed numbers. seven tenths one and four tenths seventy - eight hundredths one and four hundredths • The numbers to the left of the decimal point are . • The numbers to the right of the decimal point are parts or fractions of whole numbers. One hund red twenty-one and two tenths Eleven and thirty-two hundr endths One and four tenths One and four hundr endths Seven tenths Seventy-eight hundr endths Hundredths Tenths Base Blocks Fraction Decimal Word Form Base Blocks Fraction Decimal Word Form Line up the decimal points. Add the hundredths and regroup if needed. Add the tenths and regroup if needed. Add the ones. Place the decimal point in the sum. Line up the decimal points. Subtract the hundredths and regroup if needed. Subtract the tenths and regroup if needed. Subtract the ones. Place the decimal point in the difference. Key Vocabulary Terms • decimal • ones • decimal point • regroup • difference • sum • fraction • tens • hundreds • tenths • hundredths © Copyright NewPath Learning. All Rights Reserved. 93-4308 www.newpathlearning.com All About Decimals \|xiBAHBDy01637tz]
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