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Convert Units of Mass
Convert 2 kg 500 g in g. Method:
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Addition of Mass Mathematical sentence: \(112\;\text{kg}\;+\;365\;\text{kg}\;+\;78\;\text{kg}=\) _____ kg Method: \(\begin{array} {rr} \small{\color{red}{1}}\space \small{\color{red}{1}}\quad\quad\quad\, \\\space\space1\space1\space2\quad\text{kg} \\\space\space3\space6\space5\quad\text{kg} \\+\quad\space7\space8\quad\text{kg} \\\hline\space\space5\space5\space5\quad\text{kg}\\\hline \end{array}\) |
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Substraction of Mass
How much more is the mass of hen than the mass of rooster? Mathematical sentence: \(2\,350\;\text{g}\;-\;350\;\text{g}=\) _____ g Method: \(\begin{array} {rr} \\\;2\;3\;5\;0\quad\text{g} \\-\;\;\;\;3\;5\;0\quad\text{g} \\\hline\;\;\;2\;0\;0\;0\quad\text{g} \\\hline \end{array}\) So, the mass of hen is 2 000 g more than the mass of rooster. |
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Multiplication of Mass One packet of rice has a mass of 15 kg. Calculate the mass of 8 simillar packets of rice. Mathematical sentence: \(8\;\times\;15\,\text{kg}=\) _____ kg Method: \(\begin{array} {rr} \small{\color{red}{4}}\quad\quad\;\, \\\;1\;5\;\;\text{kg} \\\times\;\;\;\quad8\quad\;\,\, \\\hline\;\;1\;2\;0\;\;\text{kg}\\\hline \end{array}\) So, the mass of 8 simillar packets of rice is 120 kg. |
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Division of Mass The mass of 4 toy train is 600 g. What is the mass of one of the toy train? Mathematical sentence: \(600\;\text{g}\;\div\;4=\) _____ g Method: \(\;\;\;1\,5\,0\;\;\text{g} \\4\overline{\smash{)}6\,0\,0\;\;\text{g}} \\\,\underline{-4}\downarrow \\\;\;\,2\,0 \\\,\underline{-2\,0}\downarrow \\\;\;\;\;\;0\,0 \\\;\;\,\underline{-\;\;\;0} \\\;\;\;\;\;\;\;\;\,0\) So, the mass of one of the toy train is 150 g. |
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