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Multiplication and Division Strategies in Problem Solving

Using PINKS to help solve word problems
by

Nichole Deno

on 2 October 2012

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Transcript of Multiplication and Division Strategies in Problem Solving

Solving Word Problems Multiplication and
Division Strategies What are the steps to solving a word problem? THINK PINKS! Sarah is celebrating her 8th birthday. Each year her grandmother gives her $25 for her birthday. How much money has her grandmother given her in all? Let's Practice! Caitlin brought in 150 M&Ms to decorate the 30 cupcakes. How many M&Ms would be placed on each cupcake? Let's try problem solving again,
this time with division! James earns $11 a week in allowance.
How much money will he earn in 6 weeks? Now Your Turn!
Working within your table
group, solve the following
problem. On the back of your chair
you will find a colorful post it note.
If you have a blue post it note, you will be in charge of P, yellow you will be in charge of IN, pink you will be in charge K, and green you will be in charge of the solution. Paige brought in 130 pieces of candy
to fill 10 goody bags. How many pieces of candy would be in each bag? Your Turn!
Again, working with
your table. This time:
Yellow = P
Pink =IN
Green = K
Blue = S P stands for problem Find the question mark and work your way backwards underlining to the beginning of the sentence. IN stands for information. Circle the information (numbers) necessary to solve the problem. K stands for key word. The key word is the clue to solving your problem. Make a box around the key word. S stands for solution. Remember there is always a way to solve,
draw a picture, create a graph, or use an equation. Step 1: P = problem
Find the question mark
and underline the question. Our question is how much money has her grandmother given her in all? In stands for information.
What information is important in this problem? We will circle the numbers 25 and 8. K stands for Key words Words such as total, all together,
in all, double, and times tell us to multiply. Do you see one of those words in our word problem?
Circle it! Now it is time for S-Solve. There is always
a way to solve! Let's draw out the problem.
There are 8 birthdays that have been celebrated - let's draw circles
to represent each birthday. Sarah was given $25 each birthday. Let's write that in the circle.
Now we can add! Now, think about that as an equation. When we multiply, it is the same thing as adding the same number over and over again. Rather than adding
25+25+25+25+25+25+25+25=
we can simply say 8x 25. Let's go through the 8's song:
Sing it to the tune of Mary had a Little Lamb:
8, 16, 24, 32, 40, 48, 56, 64
Hmm...that doesn't work....it doesn't go up to the 25th place. Let's think about 25......... Therefore we know that 8x 25 is 200. 11x6=66 P stands for problem.
Underline it! In stands for information, circle it K stands for key words. We place a box around key words. Remember that using the word "each" in question as well as "share," remind us to divide. S stands for solution. Let's draw out 30 circles
to represent the cupcakes. What is a larger number we could use to count to 150? Let's try 5's. If we were to think about this as an equation,
we may say 150 divided by 30 = 5.
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