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Ordering Mass Weights in Different Units

Comparing and ordering mass weights involves comparing numbers and converting units if necessary. By understanding the value of digits in different columns, you can easily arrange weights from smallest to largest. Practice with examples of kilograms and grams to strengthen your skills in ordering mass weights accurately.

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Ordering Mass Weights in Different Units

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  1. YEAR 4 MEASUREMENT Lesson 19 Measurement Lesson #3 Ordering Mass

  2. To order mass we need to compare several different weights. If the weights are in the same unit of measure, we can just compare which number is larger by first looking at digit largest in value (the digit furthest left), and then working our way across to the right. For example: 0.06 kg and 0.60 kg. 0.60 kg is larger 0.60 kg is larger because they starting from the largest value, they both have zero in the ones column, but then 0.60 kg has 6 tenths whereas 0.06 kg has zero tenths so 0.60 kg is larger. So if I wanted to order: 6kg, 0.06kg, 0.6kg, 0.006 kg and 60kg from smallest to largest largest it would be: from smallest to 0.006kg, 0.06 kg, 0.6kg, 6kg, 6.6kg

  3. If we are looking at two different units of measure (e.g. grams and kilograms), then we must first convert some of the weights so that they are all in the same unit of measure. E.g. 4 kg, 0.004 kg, 40g, 4500 g, 5 kg As there are less weights in grams, it may be easiest to convert the grams into kilograms first. Th Th 4 H H 5 T T 0 O O 0 4 . . g . t t h h th th Th Th H H T T 4 O O 0 0 . . g . t t h h th th 5 kg 0 4 kg Now that all of the weights are in the same unit of measure, I can order them from smallest to largest: 0.004kg, 0.04kg, 4kg, 4.5kg, 5kg 0.004kg, 0.04kg, 4kg, 4.5kg, 5kg So looking at the original numbers: 0.004kg, 40g, 4kg, 4500g, 5kg 0.004kg, 40g, 4kg, 4500g, 5kg If you are confident, you may be able to tell without converting which weight is greater. E.g. 970 g or 1 kg. We should know there are 1000 g in every 1 kg, so 970 g must be smaller than 1 kg. This is something you could practise as you get more confident.

  4. Your Turn. Have a go at ordering these masses from smallest to largest: 3.2kg, 320g, 3400g, 3kg, 3.6kg Th Th H H T T O O . . . . t t h h th th Th Th H H T T O O . . . . t t h h th th

  5. Your Turn. Have a go at ordering these masses from smallest to largest: 46g, 4.6kg, 4kg, 460g, 5kg Th Th H H T T O O . . . . t t h h th th Th Th H H T T O O . . . . t t h h th th

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