Monday, April 13, 2020

Fun Facts or Math Tricks



Multiplying by 11 - Probably easiest one when it comes to 11 times up to 11. There is an easy way to do any number times by 11

35 X 11 = 385  (which is 3, 3+5, 5 --> 385)
48 X 11 = 528 (which is 4 ,12, 8 --> 4+1 2 8 --> 528)
78 X 11 = Can you guess? (which is 7, 15, 8 --> 7+1 5 8 --> 858)


Be Square (number ending with 5 always has 25 at the end)
35 X 35 = 1,225 (multiply 3 with next number 4, then 5 X 5 --> 3 X 4 5X5 --> 1225)
45 X 45 = 2,025 (4 X 5, 5 X 5)
65 X 65 = 4,225 (6 X 7, 5 X 5)


6 Times Table Fun Fact

6 X 2 = 12 (6 Times with even numbers has the same number at the end and half of it as first digit)
6 X 4 = 24 (as above you can see 4 and half of 4 is 2)
6 X 8 = 48

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