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LESSON 10 SESSION 2
Practice Adding Decimals
Study the Example showing decimal addition using a place-value chart. Then solve problems 1-5.
EXAMPLE
Alana walks 3.45 miles before lunch and 5.18 miles after lunch. How many miles does she walk in all?




Ones
.
Tenths
Hundredths


3
.
4
5


5
.
1
8




3 ones +5 ones 
=8 ones
4 tenths +1 tenth 
=5 tenths
5 hundredths +8 hundredths 
=13 hundredths

{:[" Sum "=8" ones "+5" tenths "+13" hundredths "],[=8" ones "+6" tenths "+3" hundredths "]:}

" Sum "=8" ones "+5" tenths "+13" hundredths "

" Sum "=8" ones "+5" tent "

" Sum "=8" ones "+5" tenth "
Alana walks 8.63 miles in all.
(1) Look at the Example. Suppose Alana walks 6.6 miles the next day. Complete the place-value chart and steps to find the number of miles she walks in two days.




Ones
.
Tenths
Hundredths


8
.
6
3



.






Sum 
=14 ones + 
qquad tenths + 
qquad hundredths

=dots dots..." ones "+2" tenths "+3" hundredths "
ones + tenths +
Alana walks 
qquad miles in two days.
oCurriculum Associates, LLC
Copying is not permitted.
Lesson 10 Add Decimals
197

Name:\newline \qquad \newlineLESSON 1010 SESSION 22\newlinePractice Adding Decimals\newlineStudy the Example showing decimal addition using a place-value chart. Then solve problems 115-5.\newlineEXAMPLE\newlineAlana walks 33.4545 miles before lunch and 55.1818 miles after lunch. How many miles does she walk in all?\newline\begin{tabular}{|c|c|c|c|}\newline\hline Ones &. & Tenths & Hundredths \\\newline\hline 33 &. & 44 & 55 \\\newline\hline 55 &. & 11 & 88 \\\newline\hline\newline\end{tabular}\newline33 ones +55 ones =8 =8 ones\newline44 tenths +11 tenth =5 =5 tenths\newline55 hundredths +88 hundredths =13 =13 hundredths\newline Sum =8 ones +5 tenths +13 hundredths =8 ones +6 tenths +3 hundredths  \begin{aligned} \text { Sum } & =8 \text { ones }+5 \text { tenths }+13 \text { hundredths } \\ & =8 \text { ones }+6 \text { tenths }+3 \text { hundredths } \end{aligned} \newline Sum =8 ones +5 tenths +13 hundredths  \text { Sum }=8 \text { ones }+5 \text { tenths }+13 \text { hundredths } \newline Sum =8 ones +5 tent  \text { Sum }=8 \text { ones }+5 \text { tent } \newline Sum =8 ones +5 tenth  \text { Sum }=8 \text { ones }+5 \text { tenth } \newlineAlana walks 88.6363 miles in all.\newline(11) Look at the Example. Suppose Alana walks 66.66 miles the next day. Complete the place-value chart and steps to find the number of miles she walks in two days.\newline\begin{tabular}{|c|c|c|c|}\newline\hline Ones &. & Tenths & Hundredths \\\newline\hline 88 &. & 66 & 33 \\\newline\hline &. & & \\\newline\hline\newline\end{tabular}\newlineSum =14 =14 ones + \qquad tenths + \qquad hundredths\newline=... ones +2 tenths +3 hundredths  =\ldots \ldots . . . \text { ones }+2 \text { tenths }+3 \text { hundredths } \newlineones + tenths +\newlineAlana walks \qquad miles in two days.\newlineoCurriculum Associates, LLC\newlineCopying is not permitted.\newlineLesson 1010 Add Decimals\newline197197

Full solution

Q. Name:\newline \qquad \newlineLESSON 1010 SESSION 22\newlinePractice Adding Decimals\newlineStudy the Example showing decimal addition using a place-value chart. Then solve problems 115-5.\newlineEXAMPLE\newlineAlana walks 33.4545 miles before lunch and 55.1818 miles after lunch. How many miles does she walk in all?\newline\begin{tabular}{|c|c|c|c|}\newline\hline Ones &. & Tenths & Hundredths \\\newline\hline 33 &. & 44 & 55 \\\newline\hline 55 &. & 11 & 88 \\\newline\hline\newline\end{tabular}\newline33 ones +55 ones =8 =8 ones\newline44 tenths +11 tenth =5 =5 tenths\newline55 hundredths +88 hundredths =13 =13 hundredths\newline Sum =8 ones +5 tenths +13 hundredths =8 ones +6 tenths +3 hundredths  \begin{aligned} \text { Sum } & =8 \text { ones }+5 \text { tenths }+13 \text { hundredths } \\ & =8 \text { ones }+6 \text { tenths }+3 \text { hundredths } \end{aligned} \newline Sum =8 ones +5 tenths +13 hundredths  \text { Sum }=8 \text { ones }+5 \text { tenths }+13 \text { hundredths } \newline Sum =8 ones +5 tent  \text { Sum }=8 \text { ones }+5 \text { tent } \newline Sum =8 ones +5 tenth  \text { Sum }=8 \text { ones }+5 \text { tenth } \newlineAlana walks 88.6363 miles in all.\newline(11) Look at the Example. Suppose Alana walks 66.66 miles the next day. Complete the place-value chart and steps to find the number of miles she walks in two days.\newline\begin{tabular}{|c|c|c|c|}\newline\hline Ones &. & Tenths & Hundredths \\\newline\hline 88 &. & 66 & 33 \\\newline\hline &. & & \\\newline\hline\newline\end{tabular}\newlineSum =14 =14 ones + \qquad tenths + \qquad hundredths\newline=... ones +2 tenths +3 hundredths  =\ldots \ldots . . . \text { ones }+2 \text { tenths }+3 \text { hundredths } \newlineones + tenths +\newlineAlana walks \qquad miles in two days.\newlineoCurriculum Associates, LLC\newlineCopying is not permitted.\newlineLesson 1010 Add Decimals\newline197197
  1. Add Ones Place: Add the ones place: 88 ones + 66 ones = 1414 ones.
  2. Add Tenths Place: Add the tenths place: 66 tenths + 00 tenths = 66 tenths.
  3. Add Hundredths Place: Add the hundredths place: 33 hundredths + 00 hundredths = 33 hundredths.
  4. Combine Sums: Combine the sums: 1414 ones + 66 tenths + 33 hundredths = 14.6314.63.

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