If you have no clue about how decimals work then getting an estimate for the answer gives you an order of magnitude which can help in placing the decimal. But if you are even a bit clued up, estimating will not be necessary.
One decimal place. 3.9 is the quotient.
By estimating the product it gives an indication of how big the final answer should be; knowing this, the decimal point can be put in to give an answer of the correct size. For example if the product estimate is 125 and the actual answer (without the decimal point) is 136728, then the decimal point needs to be inserted to make the answer about 125; the place is therefore after the 136, making the answer 136.728 (= 5.4 x 25.32 ≈ 5 x 25 = 125)
44/22 = 2 so the decimal point should be placed after the first digit (which is a 1).
In decimal form, the expression "166 remainder 1" can be written as 166.1. This is because when dividing 166 by 1, the quotient is 166 with a remainder of 1. Therefore, the decimal representation includes the whole number 166 followed by the remainder expressed as a decimal place value of 1.
hundredths place in a decimal is at the second place at the right of the decimal point.
Estimating will give an indication of the order of magnitude of the answer. The decimal point determines the order of magnitude.
Yes, that's true.
Estimating quotients gives an indication of the order of magnitude of the answer. That is, whether the answer is in units, or tens, or hundreds, thousands and so forth. Basic understanding of the placement of the decimal point should then be a trivial exercise.
Learning to estimate products is very helpful because it helps with teach you how to learn how to do your taxes and etc.
One decimal place. 3.9 is the quotient.
By estimating the product it gives an indication of how big the final answer should be; knowing this, the decimal point can be put in to give an answer of the correct size. For example if the product estimate is 125 and the actual answer (without the decimal point) is 136728, then the decimal point needs to be inserted to make the answer about 125; the place is therefore after the 136, making the answer 136.728 (= 5.4 x 25.32 ≈ 5 x 25 = 125)
Estimating the number 684.575 to one decimal place gives you 684.6 which is very close.
104
You can use estimation and place value to help you figure out where to place the first digit.
Divide as normal, but make sure to place the decimal point in the quotient directly above the decimal point in the dividend.
the decimal place in the quotient or product should be based in the decimal place of the given with the least significant figures
Example 617 divided by 6. If you estimate that 600 divided by 6 is 100, you know that the actual answer will have a 1 in the hundreds place.