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May 2012

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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.

Multiplying by zero
Free lesson plan from HomeschoolMath.net

Five columns, each has zero giraffes. 0 + 0 + 0 + 0 + 0 giraffes. 5 × 0 = 0 + 0 + 0 + 0 + 0 = __   Zero  rows  - no rows of five giraffes.  __ giraffes 0 × 5 = 0   Take three jumps of zero steps.   Where do you end up?    3 × 0 = 0.       Take ZERO or no jumps  of three steps:   0 × 3 = 0. (no jumps)   Remember, multiplication by a whole number is REPEATED ADDITION.    How many  times we add What number we add 4 × 0 =  0 +  0 + 0 + 0  =  0 Add 0 four times.   How many  times we add What number we add 0 × 4 =  (nothing to add) = 0 'Add' 2 zero times.

 

Don't forget about multiplying by one, either. Four columns, each has one giraffe. 4 × 1 = 1 + 1 + 1 + 1 = __ One  row has four giraffes.  1 × 4 = __

Example problems

1.  Write each multiplication as repeated addition.

Continue to word problems