Look at Part 1. What should you do first?
Multiply 5 by 3 and then by 2.
What do you need to do before you can multiply 1 by 3 and 2?
Put a zero below the 5 in the ones place.
What is the product of 23 and 15?
Look at Part 2. The wholes are white. How many wholes are there?
The tenths are blue and yellow. How many tenths are there?
How many wholes and tenths is 13 tenths equal to?
1 whole and 3 tenths.
How many green hundredths are there?
Look at Part 3. How did Casey get 100?
100 groups of 46 go into 7,038.
Where did 50 and 3 come from?
50 groups of 46 go into 2,438 and 3 groups of 46 go into 138.
What is the quotient? How do you know?
Dan solved the same division problem using the standard algorithm but he got a different answer. Where did Dan go wrong?
Correct Dan's math error. What should the correct standard algorithm look like?
Answers vary; students should be able to correctly work through the standard algorithm to calculate the quotient.
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