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(20) How many would there be in $3? (30) How many would there be in $4? (40) How many would there be in $5? (50) How many would there be in $6? (60) How many ten cent coins would there be in $6.50? (65) Repeat using different items and different prices. Talk about ten cents as being one tenth of a dollar. There are 10 ten cent coins in one dollar, so one ten cent coin is one tenth of a dollar. There are one hundred cents in a dollar. Ten is one tenth of one hundred because there are ten tens in one hundred. When student are confident with these questions, ask them about the number of tenths in whole numbers. How many tenths are there in all of 3? 30 tenths How many tenths are there in all of 81? 810 tenths What to expect your student to do: Student should know the number of tenths in a whole number. For example there are 20 tenths in 2, 400 tenths in 40 and 5000 tenths in 500. Knowledge of tenths follows from knowledge of tens and hundreds in whole numbers. 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