Q.1)     Use 3,2,4,5
Number in tenth's place is twice of the number in tens place.
Number in ones place is largest of all.
The number is 25.43

Q.2)     Use 8,2,3,9
Number in hundred's place is three times of the number in tens place.
Number in ones place is one fourth of the number in tenths place.
The number is 932.8

Q.3)     Use 1,2,3
Number after decimal is one fourth the number before decimal.
The number is 12.3

Q.4)     The sum of two decimals is 68.32, If one of the decimals is 29.53, the second decimal is 38.79

Q.5)     If I subtract 23.45 from a decimal I get 23.45. The unknown decimal is  46.90

Q.6)     The double of a decimal number is 23.12. The unknown decimal is 11.56

Q.7)     Form the smallest decimal number using 8,9,7,5  57.89

Q.8)     Form the largest decimal number using 8,9,7,5  98.75

Q.9)     Use 7,8,6
Number in tens place is largest of all.
Number in tenth place is smallest of all.
The number is 87.6

Q.10)    How many hundredths make 1 tenth? 10 hundreths