Practice problems of the unit conversion - page 5 of 113
The International System of Units (SI) is the standard system of units used in most countries around the world. It is based on seven base units: the meter for length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity. These units can be converted to other units using conversion factors, such as the relationship between meters and centimeters (1 meter = 100 centimeters). Other common SI unit conversions include:1 liter = 1000 milliliters
1 gram = 1000 milligrams
1 joule = 1 watt-second
1 newton = 1 kilogram-meter per second squared
In the SI system, units can be multiplied or divided by powers of ten to create larger or smaller units. These multiples are called prefixes. The most common prefixes and their meanings are:
mega- (M) = 1,000,000 (e.g. 1 megahertz = 1,000,000 hertz)
kilo- (k) = 1000 (e.g. 1 kilogram = 1000 grams)
centi- (c) = 0.01 (e.g. 1 centimeter = 0.01 meters)
milli- (m) = 0.001 (e.g. 1 milliliter = 0.001 liters)
micro- (µ) = 0.000001 (e.g. 1 microgram = 0.000001 grams)
nano- (n) = 0.000000001 (e.g. 1 nanosecond = 0.000000001 seconds)
It is important to note that, when using these prefixes, the prefix should be written before the unit symbol.
Number of problems found: 2252
- Quarters
How many meters is a quarter of a kilometer? How many centimeters is a quarter of a meter, and how many cents is a quarter of the euro? - Nightingale
Nightingale sang for five seconds for 5 hours and 5 minutes. How many seconds were missing from singing 10 hours? - Milimeters
How many millimeters are 1/4 meters? - Percentage 5780
What percentage of 1m is 15cm?
- One-tenth 3590
How many cm is one-tenth of 1 m? - Meters 3001
How many liters of water are 123 cubic meters? - The body
The body has a volume of 15 cubic centimeters and a weight of 117 grams. What is its density? - Wood
Wood density is 0.6 g/cm³. How many kilograms weigh one m³ of wood? - Determine 83377
A cork stopper with a volume of 15 cm³ weighs 3 g. Determine the density of the cork.
- Kilogram 82865
Write what part of a kilogram is: a) 10 g b) 45 g c) 7 g - Centimeters 82378
How many centimeters are in 2/5 meter? - Minutes 8381
Jirka ran the track for one decade. How many minutes did he run? - Fraction 4887
Express a fraction of what a 24-hour portion is, 80 minutes. - Calculate 3398
How to calculate 2/5 m = x dm?
- 5000g 83239
If 5000g costs €120, how much will 100g cost? - Meters 82487
How many meters are in 1/5 km? - Minutes 82246
How many minutes are there in 5/6 hours? - Hectolitre 7540
What part of a hectolitre is 12 liters? State in fraction and decimal - Kilogram 4494
The apple weighs 125g and a half apples. How many such apples are in a kilogram?
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