Mental Math Strategies For Multiplication And Division

Number talks helping children build mental math and computation strategies p 235 8 10 80 8 10 80 8 5 40 8 10 10 5 an array model is as important to multiplication and division as the number line model is to addition and subtraction.

Mental math strategies for multiplication and division. It greatly simplifies the multiplication. This lesson has strategies for multiplying large and small numbers in your head. Mentally shift the decimal place in your answer leftone place for every decimal place in the question. Multiply 68 x 3.

For dividing a number by a power of 10 greater than 1 ignore the trailing zeros and divide. Round up the number. This math youtube video tutorial explains how to use a few simple mental math tricks as it relates to basic arithmetic concepts such as addition subtraction. Some of the worksheets below are mental math worksheets facts and the fact learning strategies division using the think multiplication strategy mental calculations using subtraction facts for 10s 100s 1000s with several interesting problems with solutions.

Learn mental math techniques so that you can convert complex multiplication into simpler multiplications and use. Let us see how to apply this with an example. For multiplying a number by a power of 10 less than 1 ignore leading zeros and decimals and multiply. Multiply from left to right.

Using mental multiplication tricks after rounding up is useful when the numbers end in 7 8 or 9.