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About this game
Convert metric units: a free Grade 5 math game for ages 10-11. Kids change kilometers, meters, kilograms and liters into smaller metric units. Each round brings 10 fresh questions with new numbers; instructions are read aloud and every answer is checked.
Centimeters in 3 meters, milliliters in 2 liters, grams in 9 kilograms: Convert metric units asks one of those four conversions per card, always from 2 to 9 of the bigger unit. The list of possible cards is short, so one can come back in the same round of ten. Your child types the answer in this Grade 5 game; each one is checked, and the hint lists every rule needed.
Metric units are built on place value. Going to a smaller unit means more of them, so the answer grows: multiply. Three of the four conversions use 1,000, kilometers to meters, kilograms to grams and liters to milliliters. Only meters to centimeters uses 100. That one odd factor is worth a sentence at the table.
Habit makes everything a thousand. For 3 meters, a child on a roll of thousands may type 3000 centimeters. Ask, "How many centimeters are on a meter stick?" A hundred, not a thousand. Then say, "You checked which pair of units you had."