Math practice for 13 year olds - page 17 of 362
Number of problems found: 7231
- Percentage and fractions
Determine the correct answer by reasoning and calculating mentally. Write 46% as a fraction. ...
- Nautical vs statue mile
A nautical mile is the unit of length used in sea and air navigation. A nautical mile is equal to 6,076 feet. What percent of a statue mile (5,280 ft) is a nautical mile?
- Human population
The populations of two cities after t years can be modeled by -150t+50,000 and 50t+75,000. What is the difference in the populations of the towns when t=4?
- The average 12
The average of the first five numbers drawn was 2499. the first four numbers were 4165, 320, 7142, and 64. What was the fifth number?
- A room
A room is 8 2/3 m by 5 1/4 m. What is the area of the room?
- Fraction money
5/8 of a sum of money is £1.10. What is the whole amount?
- Fraction equation 3
A number minus one-ninth equals one-half. Find the number.
- Soup mixes
You sell soup mixes for a fundraiser. For each soup mix you sell, the company that makes the soup receives x dollars, and you receive the remaining amount. You sell 16 soup mixes for a total of (16x+96) dollars. How much money do you receive for each soup
- Building blocks
Rosa bought a set of building blocks for her younger brother, Owen, for his birthday. Owen opened the gift and immediately used all 35 blocks in the set to build a tower shaped like a rectangular prism. Each block is a cube that is 1 1/2 inches along each
- Kareem
Kareem has completed 68 deliveries so far this week. He needs to make 80 deliveries for the week. What percentage of his deliveries has Kareem completed?
- The midday
The midday temperature in Pensacola Beach was 84°F. For the next five hours, it changed to –2°F per hour. The expression 84 − |−2 ⋅ 5| represents the current temperature. What is the current temperature in degrees Fahrenheit?
- Evaluation order quiz
Which of the following is NOT true about the expression given below? (10 +4)²- 25 ...
- A teacher 3
A teacher gives pens and pencils to elementary students at an equal rate in each classroom. Pencils; Pens 18 ; 72 29 ; A 35 ; 140 B ; 168 Determine the unknown value for the letter B.
- Perimeter - general
Solve: the perimeter of a triangle is 4x+1.if two of it side are(x+2) and (x-1). Find the third side.
- Customers 4
Out of the 510 customers, 150 bought at least two items. What percent bought at least two items?
- Chocolate and chips
A bar of chocolate costs ₹10.50, and a packet of chips costs ₹6.75. What will the cost be of 8 bars of chocolate and five packets of chips?
- Long hairs
There were 30 students in a class. Eighteen had long hair. What percentage of the class had long hair?
- A jug
A jug holds 1 2/3 of a liter of water. How much does a 5 1/2 jug hold?
- The proportion
The proportion's first, second, and third terms are 4, 20, and 13. Find the fourth term.
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