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Fast Multiplication Reverse
Just like Fast Multiplication, but does the math facts in reverse. Research suggests that learning 9s, then 8s, then 7s, and so on may be more efficient than learning 1s, then 2s, then 3s, and so on. The reason is that you'll reinforce learning of the hardest materials from start until end.
This topic aligns to the following state standards
Grade 3: Num 1.3.1 Immediately recall and use addition and subtraction facts and multiplication facts to 81.
Grade 4: Num 1.4.1 Immediately recall and use multiplication and corresponding division facts through the 12's.
Grade 5: Num 1.5.1 Immediately recall and use multiplication and corresponding division facts through 12's.
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