6. Now try these. Remember to change them to the same units before you start. a) 3760g + 2kg 907g + 11.5kg c) 16.84kg + 21kg 530g + 5392g e) 739g + 2kg 83g + 36.2kg


b) 12.65kg + 9003g + 10kg 980g d) 18.8kg + 12930g + 8kg 7g f) 20kg 5g + 19.02kg + 18g


7. William’s schoolbag weighs 6kg 8g and Deirdre’s weighs 4.02kg. How much heavier is William’s schoolbag?


8. Now try these. Remember to change measurements to the same unit fi rst. a) 6950g – 3.01kg d) 16700g – 10kg 7g


b) 14kg 12g – 8669g e) 55kg 758g – 44.8kg


Kilograms and Tonnes Remember: 1000 kilograms (kg) = 1 tonne (t) c) 21.5kg – 370g f) 179.2kg – 97kg 2g


Minnie – 845.8kg Hefty – 998kg 35g


1. a) Which whale is the heaviest? b) What weight are Minnie and Bulky added together? c) What weight are Hefty and Teeny added together? d) Which 2 whales added together would be the heaviest?


e) If all 4 whales were on very big weighing scales, what would their combined weight be?


f) How much heavier is the heaviest whale than the lightest whale?


2. A large container ship has 3 crates weighing 780.6kg, 640kg 320g and 810.07kg. How much less than 2500kg (or 2.5 tonnes) is their combined weight?


Bulky – 805kg 9g


Teeny – 902.487kg


184 Weight


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