Maths practice for 12-year-olds - page 78 of 362
Number of problems found: 7223
- Swimming 78124
A 16 m square swimming pool has an area of 1 m² on the city plan. What is the scale of the city plan? - The mother
The mother bought 3 3/4 kg of beef, 2 1/4 of pork, and 5 1/4 of chicken. How many kilograms of meat did she buy? - Fenced 78064
I bought 51m of wire, fenced off a square garden, and had 3m of wire left. What is the size of the garden? - Anthea
Anthea is running an experiment to examine vaccine shelf life, and she must precisely monitor the temperature. The starting temperature is −116 degrees Celsius (°C). The temperature rises by 35 degrees, then falls by 12 a degree. What is the final tempera - O'clock 78004
What is the degree angle made by the hands of a clock when it points to 8 o'clock? - Cube-shaped 77974
How much shelf space does a cube-shaped aquarium take up if it holds 27 liters of water? - Drill bit
Bill's 3/8-inch drill bit is missing and needed for a job. He can get by with drilling a smaller hole than 3/8-inch as long as it is as close to 3/8-inch as possible. Which of the following bits would be the best to use? A. 13/32 inch B. 23/64 inch C. 1/2
- Madeline
Madeline is making a quilt. She found some pieces of fabric on sale, each measuring 9/10 of a yard. She will use 2 1/2 of the pieces for the quilt. What is the total length of the fabric she will use? - Manuel Manuel has a rope that is 4 meters long. He cuts away a piece that is 1.06 meters long. How long is the remaining piece of rope?
- Three friends
You and your friends are playing basketball. You make 7 out of 15 shots. Your first friend makes 6 out of 10 shots, and your second friend makes 5 out of 12 shots. Who is the better shooter (write a, b, c)? How would you solve the problem using what you k - Half of the product
What is half the product of 8 1/7 and 7 4/5? - Convert 5 Convert to a mixed number and simplify: 83/6
- Scientific experiment In a scientific experiment, the temperature of a liquid was -12 degrees. If the temperature was increased by 5 degrees, what would the temperature be then?
- Femma
Emma mixes 1 7/8 cup of water with 2/3 cup of orange juice as a part of a recipe. How many cups is her mixture? - A molecule
A molecule travels with a speed of 8100 centimeters per minute (cm/min). How far would the molecule travel in centimeters in 3.19 seconds?
- Ruby barbecued Ruby barbecued 3 1/2 kg of meat for her visitors. If she served 5/8 of the barbecue, how much barbecue was left?
- Solve 15
Solve equation with fractions 29/12=24/12+?/12 - Convert 4 Convert 2 7/10 into an improper fraction.
- Express 66
Express 6 whole 7/10 hours in minutes. - Adding 11 You are adding numbers. Which of the following numbers to 3/5 will give a whole number? a. 2 b. 2/5 c. 5/3 d. 3/5
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