Rational numbers - practice for 13 year olds
Number of problems found: 99
- Same distance
What decimal is the same distance from 7.1 and 7.4? - A decimal number
I am a decimal number between 0.300 and 0.400. My hundredth digit is 3, and my tenth digit is 8. What number am I? - Fraction function
If Begin equation . . . y equals . . . begin fraction . . . x raised to the second power minus 3 times x plus 10 . . . over . . . x plus 4 . . . end fraction . . . end equation, find f(5). - Evaluate expression 10
Evaluate expression: (a-b)+c if a=7/10, b=3/5, and c=-1.9. Write your answer as a mixed number in simplest form.
- Three rationals
Let x, y, and z represent three rational numbers, such that y is 512 times x and z is 50.25 more than x. If y=15.5, what is the value of z? - The quotient of two numbers
Find the quotient of 229.12 and 12.32 - Naturally 7826
The ratio of two natural numbers is 2: 3. The smaller number naturally is 12. What is the product of these numbers? - Write 4
Write each ratio as a fraction of whole numbers: a 4.8 to 11.2 6) 2.7 to 0.54 - Sum of absolute values
Is it possible for |r| + |s| = |r+s|? If so, when?
- The product 5
The product of two numbers is 250. One factor is 1/10 of 250. What is the second factor? What is the reciprocal of 1/10 of 250? - A twelve-pack
A twelve-pack of juice costs $4.20. An eighteen-pack of juice costs $5.40. The eighteen-pack of juice is a better buy. How much cheaper PER JUICE is the eighteen-pack? - Create 2
Create word problems based on the given number sentence (300/24) - (207.60/24) = N - The elevation
The elevation of a sunken ship is -120 feet. Your elevation is 5/8 of the ship's elevation. What is your elevation? - Overnight change
It was 13°C yesterday, but the temperature changed by -18.6° overnight. What is the temperature now?
- A sum 2
A sum of money is divided between Laura and Joan in the ratio of 2:3. Laura gets 8 pesos. How much did Joan get? - Marble bag
A marble bag sold by Rachel's Marble Company contains five orange marbles for every six green marbles. How many green marbles does it contain if a bag has 35 orange marbles? - A man 8
A man has 72 sheep. He wants to divide the sheep among his four children in the ratio of 5:3:2:2. How many sheep will each child get? - Sweaters 14
A store buys 14 sweaters for 84$ and sells them for 504$. How much profit does the store make per sweater? - Boys and girls
If the ratio of male & female teachers is 2/5 & it is in the proportion of the male & female students, how many are girls if there are 42 boys?
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