Arithmetic Grade Three
Lesson Seventy-three: Missing Numbers
You should be so good at your multiplication facts that you can supply
missing numbers as required in this following problem:
To answer this question you need to be able to recall that 9 x 2 = 18. Once
you recall this fact, it is easy to realize that the blank in the sample
problem must be filled with a 2.
Here's another problem:
Recall that 5 x 7 = 35. So, the answer to this problem is 7 since 7 fits
into the blank to make the statement true.
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