The ideas in this multiplication lesson are taken from Division 2 ebook. Only a few examples of each problem type are shown; you should make more problems of each kind for the student.

# Multiplying by 100 and other whole hundredsFree lesson plan from HomeschoolMath.net

Fill in some of the MULTIPLICATION TABLE OF 100.

 1 × 100 = ___ 2 × 100 = ___ 3 × 100 = ___ 4 × 100 = ___ 5 × 100 = ___ 6 × 100 = ___ 7 × 100 = ___ 8 × 100 = ___ 9 × 100 = ___ 10 × 100 = ___

## Example problems

1.  Remember multiplication is repeated addition.  So you can solve these problems by adding. Continue the patterns as you can.

 1 × 200 = ____ 2 × 200 =  3 × 200 = ____ 4 × 200 = ____ 1 × 300 = ____ 2 × 300 = ____ 3 × 300 = ____ 1 × 500 = ____ 2 × 500 = ____

2.  For each multiplication, write two division sentences.

 a. 100 × 4 = 400 400 × 4 = 100 400 × 100 = 4
b.   10 × 57 =  d.   100 × 3 =
e.  2 × 300 =

f.   200 × 3 =  h.   8 × 90 =

3.  Multiply and compare.

 10 × 5 = ___ 100 × 5 = ___ 10 × 9 = ___ 100 × 9 = ___ 10 × 10 = ___ 100 × 10 = ___ 6 × 70 = ___ 60 × 7 = ___ 5 × 90 = ___ 50 × 9 = ___ 20 × 9 = ___ 90 × 2 = ___

4. Divide.  Think backwards of multiplication.

 a.  480 × 12 = c.   480 × 10 = d.   200 × 20 = e.  300 × 10 = g.  600 × 100 = h.   600 × 200 = m.  350 × 70 = o.   220 × 11 = p.   220 × 110 =

5.  What numbers can you multiply to get the given number?  In other words, find factors for the given product. Find several different ones.  The first ones are given as examples.

 a. 600 = 30 × 20 600 = 300 × 2 600 = 3 × 200 600 = 100 × 6 600 = 12 × 50 d. 200 = e. 100 = h. 400 =

Next lesson: Distributive property