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2 paper clips weigh about  1 gram.
1 nickel weights about  5 grams
200 nickels weigh about 1000 grams or 1 kilogram.

1.) There are 100 paper clips in a box. How many grams would a box of paper clips weigh?
It would weight ____________ grams.

2.) There are 20 boxes of paper clips in a carton. How many grams would a carton of paper clips weigh?
The carton would weigh ___________ grams.

3.) How many grams would a roll of 40 nickels weigh?
The roll would weigh _____________ grams

4.) How many nickels would weigh 5 kilograms?
____________ nickels would weigh 5 kilograms.

5.) A truck is hauling 6 crates. Each crate weighs 35 kilograms. How much do all the crates weigh?
They weigh ___________ kilograms.