Peso (Masa)

Change to grams: 35 mg, 2348 mg, 4,58 kg, 35 kg.
Fill the gaps:
1. 4200 g = … kg; 5750 kg = … t; 600 kg = … t; 755 g = … kg
2. 0.58 kg = … g; 3.75 t = … kg; 15.2 kg = … g; 750 kg = ... t.
3. 98 kg = ... g; 56 mg = ... g; 125 mg = ... g; 7,8 kg = ... g
La dosis máxima de paracetamol que puede ingerir una persona es de 3 g. Mira la etiqueta del siguiente medicamento y calcula cuántos comprimidos como máximo se podrían tomar en un día si se estuviese enfermo.

Un camión ha cargado 45 cajas de 34 kg cada una. La TARA del c
amión es de 3 700 kg. ¿Cuántas toneladas pesa el camión cargado?
1. Search the web for the weights of a blue whale and an African elephant. How many elephants will it take to equal the weight of a whale?

Imperial system equivalences

Examples of the everyday use of imperial measures are:

You need to know the approximate conversions between certain imperial units and metric units.

The symbol ‘≈’ means ‘is approximately equal to’.

ograms (1 lb ≈ 0,45 kg = 1/2 - 1/20 kg. Trick: one half minus one tenth of one half). For example: 200 lbs is about 90 kg (200/2 - 20/2).2.2 pounds ≈ 1 kilogram (to convert kg to lbs, multiply by 2 and add 1/5 of the given quantity). For example: 50 kg is about 110 lbs (50x2 + 50/5).
1 ounce ≈ 30 grams (actually, 28.349523125 grams).
1 ton ≈ 1 000 kg (actually, 1 016 kg (UK); 907 kg (US)).

Use the conversion factors above to find the following approximations. Note: An answer should be rounded when it has several decimal places, since it is only an approximation.
1. 6 kg = … pounds
2. 11 pounds = … kg
3. 56 kg = … pounds
4. 200 pounds = … kg
Which is heavier, a tonne or a ton? Show your working clearly.
The weight of 1 cm³ of water is about 1 gram.
1. What is the weight of 1 litre of water:
  1. in grams?
  2. in kilograms?
2. What is the approximate weight of 1 gallon of water:
  1. in grams?
  2. in kilograms?
Mrs Hall weighs a chicken on some kitchen scales. The chicken weighs 3½ kilograms. Change 3½ kilograms into pounds. Give your answer to the nearest pound.
Beth weighs 10 stone 5 pounds and her height is 5 feet 4 inches.
1. Estimate her weight, to the nearest kilogram.
2. Estimate her height, to the nearest centimetre.
Accede a esta web averigua cuantas monedas necesitas para conseguir el peso onza.
What is the weight of an A4 sheet of paper? Data: Its quality is 80 gr/m².
Find out how many sheet of papers or pieces of them do you need to make one of each of the above units of weight.