Maths practice for 12-year-olds - page 3 of 351

Number of problems found: 7007

The product 17
The product of two fractions is 7/15, and one of the fractions is 7/9. What is the other fraction?
Sarah 7
Sarah bought snacks for her team's practice. She bought a bag of chips for $1.56 and a 20-pack of juice bottles. The total cost before tax was $33.96. Write and solve an equation which can be used to determine, how much each bottle of juice cost.
Expression - two variables
The formula with two variables is given: y=5*x+38. Solve for x.
Two cubes 2
Two cubes each of volume 125 cm³ are joined end to end. Find the surface area of the resulting cuboid .
Decimal to fraction
What is 0.99 into a fraction?
Repeating to infinity
How do I express 0.99999999… as a fraction? (nine repeating) Another questions: Can you write .9999 repeating as a fraction? How do you turn 0.9 repeating into a fraction?
Mixed plus proper fraction
1 whole 1/2+1/3=
Two trains 15
A train travelling 50 kmph leaves Delhi at 8 AM and another train travelling 70 kmph leaves Delhi at 11 AM in the same direction. How many km from Delhi will they be together?
Antecedent and consequent
In a ratio which is equal to 5:8, if the antecedent is 40, then find the consequent.
Avg velocity
A car travels 120 km at 60 km/hr and another 120 km at 40 km/hr. What is its average speed?
Direct proportional
If m is proportional to n and m=5 when n=4, then what is the value of m when n=18?
Crossing a pole
A train 200 m long is moving at a speed of 72 km/hr. How much time will it take to cross a pole?
Three quarters of a hour
Calculate the value of 3/4 of 40 hours.
Two wipers
What A car has two wipers which do not overlap. Each wiper has a blade of length 21 cm, sweeping through an angle of 120°. Find the total area cleaned at each sweep of the blades.
Bags of clothes
Nathan and John are collecting clothes for a clothing drive. John collected 1/10 as many clothes as Nathan did. If Nathan collected 1/3 of a bag of clothes, how many bags of clothes did John collect?
LCM and HCF 3
LCM of two integers is 1237. What is their HCF?
A cube 4
A cube of edge 5 cm is cut into cubes, each of edge 1 cm. Find the ratio of the total surface area of one of the small cubes to that of the large cube.
Food - rice
A man spent 1/3 of his salary on food. 1/4 of what he spent on food was on rice. What fraction of his salary did he spend on rice?
Winter clothing drive
Grace's class collected 10 pounds of clothing for the winter clothing drive. Lucia's class collected 1 1/2 times as much clothing as Grace's class. How many pounds of clothing did Lucia's class collect? Write your answer as a fraction or as a whole or mix
Two games
In a class of 65 students, 30 students play cricket, 20 students play tennis, and 10 students play both games. Then, find the number of students who play neither.

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