45*2 = 90 so 45*20 = 900
45*3 = 135
So 45*23 = 45*20 + 45*3 = 900 + 135 = 1035
1x3=3x3=9
How can you use 2x10 to find 4x10
1 x 7 plus 2 x 7 is the same as 3 x 7
The fact that 3 x 9 = 27
In what situtation can you use only multiplication to find equivalent fraction? Give an example
1x3=3x3=9
How can you use 2x10 to find 4x10
you can use multiplication facts to find division facts by dividing your divisor and your quotient to find your answer.
each side is multiplied together.
routine practice
A multiplication grid, or multiplication table, is used to find the product of two numbers quickly. To use it, locate one number along the top row and the other down the left column. Then, find the cell where the row and column intersect; this cell contains the product of the two numbers. This tool is particularly helpful for visualizing and memorizing multiplication facts.
The "multiplication facts" may be numbered differently in different textbooks, so it is really hard to guess what multiplication facts you are talking about. Better use the standard names, for example, "commutative property", "associative property", etc. For a multiplication such as 3 x 7, you either memorize the tables, your you do the repeated addition (3 x 7 = 7 + 7 + 7, that is, 7 appears 3 times as an addend.)
Yes - double, then double and then double again is the same as multiplying by 8.
array
To find 3 x 9, you can use the multiplication facts of 3 x 3 and 3 x 6. First, calculate 3 x 3 to get 9, and then use 3 x 6, which equals 18. By adding these two results together (9 + 18), you can confirm that 3 x 9 equals 27.
A multiplication chart is a tool that helps you quickly find the product of two numbers. To use it, locate one number on the top row and the other number on the left column. The cell where the row and column intersect shows the result of their multiplication. This chart is especially useful for memorizing multiplication facts and for quickly solving basic multiplication problems.
1 x 7 plus 2 x 7 is the same as 3 x 7