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CBSE Class 7 Answered

Professor Lee measured the composition of metals in a sample. The sample contained 238.377 grams of copper, 721.53 grams of nickel, 1.5 grams of iron and 38.94 grams of cobalt. How many grams was Professor Lee's sample?
Asked by Topperlearning User | 06 Nov, 2013, 03:57: AM
answered-by-expert Expert Answer

Answered by | 06 Nov, 2013, 05:57: AM

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CBSE 7 - Maths
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CBSE 7 - Maths
Professor Lee measured the composition of metals in a sample. The sample contained 238.377 grams of copper, 721.53 grams of nickel, 1.5 grams of iron and 38.94 grams of cobalt. How many grams was Professor Lee's sample?
Asked by Topperlearning User | 06 Nov, 2013, 03:57: AM
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CBSE 7 - Maths
A chemist has several beakers full of different liquids that he will use to make a solution. The chemist records the amount of liquid in each beaker: 640.6 milliliters, 908.44 milliliters, 1.5553 liters, and 0.6 liters. How many milliliters of solution will the chemist have after he mixes together the liquids in the beakers?  
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CBSE 7 - Maths
Add the following: (a) 5.25 + 3.81 (b) 9.90 + 6.88
Asked by Topperlearning User | 08 Nov, 2013, 01:47: AM
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CBSE 7 - Maths
Subtract : (a) 80.09 - 49.59 (b) 63.38 - 5.07
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