3.07 Story problems with mixed operations
Are you ready?
Let's try this problem to practice reading a story problem and then writing the number sentence that we would use to solve it.
Tom has $60$60 chocolates to give out to $10$10 guests at his birthday party and wants to make sure each guest gets the same amount.
Write a number sentence for this story problem to find how much each guest would get.
Learn
We can use numbers, pictures and symbols to solve number problems. Let's see how we can solve multiplication and division in this video.
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question 1
Sally and her mom were at home. Her grandma came around to visit, then her dad and brother came home together.
Which number sentence matches the number of people in the house?
$2+1-2$2+1−2
A$2+1+2$2+1+2
B$1+1+2$1+1+2
C$2-1+2$2−1+2
DHow many people are in the house altogether?
Learn
Sometimes we need more than one step to solve a number problem, so it helps to look at how to work through each step.
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question 2
Harry has $110$110cm of ribbon, which he cuts into $10$10 equal pieces.
He then selects one of these pieces, and cuts $5$5cm off it.
How long is this piece of ribbon now?
- Mathematical problems can be represented with words, pictures and symbols.
- If our problem has equal groups and we need to find a total, we use multiplication.
- If we have to share our total into equal groups, we use division.