4 Multiply by 1 and 0
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Transcript of 4 Multiply by 1 and 0
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MULTIPLY BY 0 AND 1
MULTIPLICATION
MATHTHIRD GRADER
2008
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MULTIPLICATION TABLES
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Multiply With 1 and 0There are special properties When 1 or 0 is a factor.
6 0 8 2
0 0 1 0
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EXLORING
0 3 4 0
5 0 9 0
=7 =0 =0 =8
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EXLORING
6 0 0 7 3 0
1 5 10 0 2 0
0 8 4 9 0 0
=0 =0 =5 =6 =1
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PRACTICE
=0 =0 =9 =0 =4
The same number
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PROBLEM SOLVING Daniel has the frames shown at the right to
display his autograph collection. What two multiplication sentences show the total number of autographs displayed now?
Represent Think of people whose
autograph you would like to have.
Write one autograph in each of the frames
shown at the right. What two multiplication
sentences show the total number of
autographs now?
3 frames of 0 autograph = 0
3x0=0 or 0X3=0
3x1=3 or 1X3=3
ANNA
FELIPE
ANDRES
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PROBLEM SOLVING
3. Reasoning What is the least possible product when you multiply 1 by a one-digit number? Explain.
4. What’s Wrong? Kirk says that the product of 1 and any number has a 1 in the ones place. What’s wrong?
The possible product when you multiply any number by 1 is the same number.
1 x 5 = 5
6 x 1 = 6
The number in the ones place depends on the number that is multiplied by 1..
11 x 1 = 11
20 x 1 = 20
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CHALLENGE MASTERSFind three squares in a row—across, up or down, or diagonally—that have the same product. Circle the squares and tell what the product is.
6 20
12 0
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PRACTICE
9 0 6 7 0
0 3 5 0 8
10 2 6 0
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PRACTICE
20 X 1 = 20