Maths practice for 12-year-olds - page 79 of 355

Number of problems found: 7087

Bryon
Bryon has 1 7/10 kilogram of black pepper. He uses 7/8 of the pepper and splits it between 7 pepper shakers. How much pepper will be in each shaker?
Paul ate
Paul ate 2/8 of a cake and his brother 3/8. What fraction of the cake is left for the parents?
Fifteen 5
Fifteen more than five times a number equals the difference between -57 and three times the number. Find this integer number.
Value of a expression
Find the value 5(11)-10²-15+20
Statistical deviation
Our school has 59 pupils in year 5, 52 in year 6, 86 in year 7, 70 in year 8 and 71 pupils in year 9. a) Determine what the statistical population is. b) Determine what the statistical unit is. c) Determine what the statistical variable is. d) Record the
A box 5
A cereal box states that a 3/4-cup serving contains 90 calories. How many Calories are in 4 cups of cereal?
Rana bought
Rana bought 30 liters of gasoline for 575 l per liter. She also bought 3 kg of motor oil for 9.750 l. Find the total amount of money Rana paid in one step only.
June bought
June bought 3 1/2 gallons of white paint at $17.50 per gallon and 1 3/4 gallons of blue paint at $19.00 per gallon. What was her total cost?
Five-digit digit sum
What is an even five-digit number whose digit sum is 44?
The circle
If the radius of a circle is 3+root3, what is the area?
Trapezoid crossbar height
Calculate the middle crossbar of a trapezoid whose area is 111.8 cm² and height 6.5 cm.
A sports
A sports tournament has "n" teams. Each team has 17 players. Using "n", write an expression for the total number of players.
Lace table edge
The old woman crocheted 1 meter of lace. Will it be enough to edge a parallelogram-shaped table with dimensions 35 cm and 16 cm?
Pool water hectoliters
How many hectoliters of water are in a rectangular prism-shaped pool if the top is 6m wide, the bottom is 4m wide, the pool is 2m deep, and the pool is 12m long?
Payment of the bills
The treasurer is to pay the following amounts: €369 30c, €1426 25c, €694 17c, €1242 38c, €858 41c and €219 38c. How many hundred euros will he order at the bank to pay each amount accurately and, if possible, in the largest bills and coins?
The Iceland
There is a geyser and a volcano in a nature reserve in Iceland. The geyser erupts regularly every 18 days, and clouds of smoke rise from the volcano every 40 days. How many times in the course of 9000 days will there be a situation where we can observe bo
Three 205
Three metallic bars of lengths 400 cm, 600 cm, and 720 cm are cut into equal pieces. Find the largest possible area of a square that can be made from any of the three bars.
Ratio equation solving
Find x in the ratio equation: 2:1 4/5=x:3/5
Pencils
You have 36 pencil crayons. How many pencil crayons make 1/2 of the total?
Mrs. Jones
Mrs. Jones bakes pies. She always cuts each pie into eight slices. There are 13 slices left on the counter. Write the number of pies on the counter as a mixed number.

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