Maths practice for 12-year-olds - page 230 of 351
Number of problems found: 7020
- Cyclist 9
A cyclist travels at a speed of 4.25 km per hour. At that rate, how far can he travel in 3.75 hours? - Negative in equation
2x + 3 + 7x = – 24, what is the value of x? - Running
Joanne ran 8 1/2, Kyleigh 1 2/3, and John 6 3/4 miles in one day. How many miles did the girls run in 3 days? - Sewing
Beth's mother can sew 235 pairs of short pants in 6 days, while Lourdes can sew 187 pairs in 8 days. How many more pairs of short pants can Beth's mother sew? - A clock
Mother set a clock right at 6:00 AM. If it gains 3 1/2 minutes per hour, what time will it show at 6:00 PM on the same day? Show your solution. - Gasoline tank 2
A gasoline tank is 1/6 full. When the family added 25 liters of gasoline, it became 3/4 full. How many more liters are needed to fill them? Show your solution. - Supermarket
In a local supermarket, 3/5 kilograms of octopus cost 156.00. How much do 4 kilograms of octopus cost? - To improper fraction
Change the mixed number to an improper fraction: a) 1 2/15 b) -2 15/17 - Prime factors
Write 98 as a product of prime factors. - A pipe
A radius of a cylindrical pipe is 2 ft. If the pipe is 17 ft long, what is its volume? - Solve 2
Solve integer equation: a +b+c =30 a, b, c = can be an odd natural number from this set (1,3,5,7,9,11,13,15) - Birthday party
The mother bought 6 3/4 kg of hotdogs and 5 1/3 dozen bread rolls for her youngest son's birthday party. Hotdogs cost 160 per kilogram, and a dozen bread rolls cost 25. How much did she spend in all? - Dinning room
How many different combinations can we choose if there are three soups, five kinds of the main dish, and two desserts in the dining room? - Boy-girl 6766
How many boy-girl pairs can we create from a class of 15 boys and 16 girls? - Regrouping
Subtract mixed numbers with regrouping: 11 17/20- 6 19/20 - Circular 6760
What circular track radius must a runner run six times to run 1.8km? - Two chords
There is a given circle k (center S, radius r). From point A, which lies on circle k, are starting two chords of length r. What angle do chords make? Draw and measure. - Sweater
Dana confuses me by stating that sweaters and wool have a choice of seven colors. How many ways can she choose from three colors for the sleeves? - No smoke
Tobacco company NO-SMOKE adorned its stand at the cigarette-type trade fair with cigarette-shaped. The dimensions of which were 20 times the size of a regular cigarette. Regular cigarette contains 0.8 mg of nicotine. How much nicotine would a giant cigare - Cube walls
Find the cube's volume and surface area if the area of one of its walls is 40 cm².
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