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Because if you measure the same amount but with a smaller unit, you expect to

wind up with a bigger number of them. For example, there are more teaspoons of

water in a swimming pool than gallons of water in the same pool.

If you expect to have a bigger number after converting the units, then multiplication

is definitely the way to go.

Q: Why you need to multiply when converting from a larger unit to a smaller unit?

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You need to convert everything to the same units, then compare. Converting yards to inches is easiest; since a yard has 3 feet, and a foot has 12 inches, that means that a yard has 36 inches - so to convert from yards to inches, you multiply by 36.

When you change from a larger unit to a smaller unit there will be more of them; thus you multiply. eg millimetres are smaller than centimetres. Thus it requires many more of them to measure the same distance. Thus when converting metres to millimetres a multiplication will be required. If you draw a line 3.5 cm long with your rule, and then measure it in mm you will find that it takes 35 mm. If you look closely you will see than 1 cm = 10mm, thus 3.5 cm = 3.5 × 10 mm = 35 mm.

To determine which fraction is larger, we need to find a common denominator. In this case, the common denominator is 120. Converting 5/8 to have a denominator of 120 gives us 75/120, while converting 7/15 gives us 56/120. Therefore, 5/8 is larger than 7/15.

The large value converting to small value is multiplied. The small value converting to large value is divided. inches (small value) to feet (large value) is divided. The number of inches in a feet is 12 inches, so to convert inches to feet, one would need to divide the number by 12.

They do not. Population size does not affect the sample size. The variability of the characteristic that you are trying to measure and the required accuracy will determine the appropriate sample size.

Related questions

You need to multiply PSI by 6894.75729, which gives 8,273,708.75 pascals

To convert a given unit to a larger unit, you need to determine the conversion factor between the two units. Divide the given value by the conversion factor to get the answer in the larger unit.

It need not be. 1.5 * 6 = 9, which is bigger than 6, not smaller.

There are lots of small units in each big unit. As a result, the number of small units is greater and to go from a greater number to a smaller number you need to divide by a number which is biiger than 1.Alternatively, to change a smaller unit to a larger unit you can always multiply by a number which is between 0 and 1.

1.77 equals 177%. When converting decimals to percentages, all you need to do is multiply it by 100 and add the percent (%) to the end of it.

To create larger waves when using a rope, you will need to make a larger amplitude. By moving your hand or shaking the rope with larger excursions, you can generate bigger waves. Conversely, smaller amplitudes would result in smaller waves.

"smaller" is a binary operator: you need two numbers, 9 and another one, before you can decide whether 9 is smaller, the same or larger.

It does not need to be. It can be smaller or larger.

Presumably, the theory is that it's easier to multiply by small numbers than larger ones. If there's a number that you need multiplied by 18, multiply it by 3, then multiply that total by 3, then multiply that total by 2.

You need to convert everything to the same units, then compare. Converting yards to inches is easiest; since a yard has 3 feet, and a foot has 12 inches, that means that a yard has 36 inches - so to convert from yards to inches, you multiply by 36.

no, pressure is the same , but it will need less volume of air

cast back to maths and you know that 0.5 is a half, 0.25 is a quarter, you only need to remember converting a decimal to a fraction and you know what to do.