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Subscribe to Homeschool Math Newsletter - filled with math teaching information February 2010 newsletter
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The ideas in this multiplication lesson are taken from Multiplication 1 ebook. Only a few examples of each problem type are shown; you should make more problems of each kind for the student. Order of operations
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| Do MULTIPLICATION first, before addition or subtraction.
ADD and SUBTRACT from left to right. |
| Study the examples. The operation to be done FIRST is marked.
Add and subtract from left to right:
Multiplication first:
Multiplication first. Then add and subtract from left to right:
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1. Add and subtract. Write the second step underneath the problem.
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a. 15 − 4 + 3
= 11 + 3 = 14 d. 20 − 7 + 2 |
b. 18 − 5 + 4
e. 15 − 1 + 3 |
c. 50 − 40 + 40
f. 23 − 10 + 3 |
2. Do the multiplication first.
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3. Now watch carefully! You will need more steps.
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a. 3 × 4 − 2 × 3
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b. 6 + 7 × 2 − 4
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c. 2 × 5 + 4 × 5
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d. 11 + 4 × 2 − 4
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e. 6 × 3 − 10
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f. 6 + 7 × 2 − 4
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Copyright 2003-2010 Maria Miller
http://www.homeschoolmath.net/
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