Transcript Real-World Problems: Two

Grade 4, Chapter 6, Lesson 6
Renaming Whole Numbers
when Adding and Subtracting
Fractions
Add fractions to get mixed-number sums.
Subtract fractions from whole numbers.
Solve the following? What do you
know about these problems?
1
3
2
3
=
=
?
3
?
2
9

4
=?
2=
?
4
What do we do when we solve
word problems?
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Read the problem
What do I have to answer?
Re-read each sentence and draw the bar
models, label the units. Adjust the bars as
necessary. Place your question mark.
Check your diagram.
Write the equations to solve the problems,
solve the problem
Check your answer. (Plug value back into the
diagram. Check the arithmetic.)
Warren and Drake each had an
7
apple. Warren at of his apple
8
3
and Drake ate of his apple.
4
What fraction of the apples did
they eat altogether?
Find the sum of
3
4
,
1
5
, and .
8
8
Write the equation this would represent?
 What do you think will be a good
estimate? Why?
 Work with your partner and use the tape
diagram strips to show the problem.
 Show the arithmetic and solve the
problem.
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Compare to the book
What are the steps we did to solve this
problem?
 Look at page 251 – what are the steps
that are shown in the book.
 What is alike? What is different?
 Do the differences matter? Why do they
work the same?
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Subtract fractions from whole
numbers.
Rosita had 3 pretzel
rods. She ate 4/9 of
one pretzel rod. What
fraction of the pretzel
rods are left?
Compare the methods
What is the difference between these two
methods?
 Which method do you think is easier?
Why?
 Do you think both methods will always
work for all problems? Why?
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