You can do lattice, or do it mentally
ends with 5 2 ways to multiply
ways to multiply 90 more than 2 factors
2 times7=14
Multiply 100 by 1000 or multiply 1000 by 100.
You can multiply 2 and 9 to get 18. Alternatively, you can multiply 3 and 6 to get 18 as well.
Find out yourself
1x144,2x72
140 multiplied by 2 28 multiplied by 10 There are many more ways to multiply to get 280.
You either multiply 2 by 2.5, add 3 to 2, or subtract -3 from 2. These are the easiest ways to do so.
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Here are two ways to solve it. 1) Multiply 2 x 1, multiply 2 x 5/6, add the results. 2) First convert 1 5/6 to an improper fraction, then multiply.
Multiply by 2/2Multiply by 3/36/10, 9/15