Maths practice for 11-year-olds. - page 182 of 224

Number of problems found: 4464

Greater 3964
How many times is the number 10¹² greater than the number 10^-4?
Rectangular garden 4F
The fence around the rectangular garden measures 264 2/3 m. The length of the garden is 79 1/4 m. How wide is the garden?
Equation: 3955
What is the value of x in this equation: 2.5x: 4 = 7.5. x is a natural number.
Identify 3954
Identify all subsets of sets: {3,5,8}, {1,4}, {0}, empty set. Write down the number of subsets.
Calculate: 3944
Calculate: a) 23 - [2.6 + (6 - 9) - 4.52] b] 12.25 + 2 [2.7 - (-0.5 + 0.3 * 0.6)]
Rectangular 3941
Petra invited her friends Olga and Pavel to sew. Olga sewed three tablecloths, Pavel two, and Petra five rectangular napkins measuring 39 times 30 cm. Was it enough for them to decorate 15 meters of ribbon?
Lcm simple
Find the least common multiple of these two numbers: 140 175.
Square s3
Calculate the square's diagonal, where its area is 0.49 cm square. And also calculate its circumference.
Beginning 3930
Roland has 490 balls. If he gave 145 bullets to Marek, he would still have 100 more bullets than Marek. How many balls did Marek have at the beginning? How many shots do they have together?
Order Fractions
Arrange the fractions from the smallest to the largest. 2/5, 15/6, 1/4, 5/5, 5/4, 4/10, 6/5.
Rails
18 m railway weighs 1260 kg. How much weighs 100 m of welded railways?
Mathematical 3918
For the variables x = -8, y = 12, z = -5, evaluate these two mathematical expressions a = y-z b = z / (x-z)
Centimeters 3913
Calculate the diagonal of a square whose area equals 625 square centimeters.
Mathematical 3911
For the variables x = 8, y = 12, z = -5, evaluate these two mathematical expressions a = y-z b = z / (x-z)
Fluid
We have vessels containing 7 liters, 5 liters, and 2 liters. The largest container is filled with fluid, and the others are empty. Can you only get 5 liters and two 1 liter of fluid by pouring? How much pouring is needed?
Clotheslines
Mommy needs six clotheslines 360 cm long. Clotheslines are sold in the length of eight meters. How many of these clotheslines must buy mom if any does not want to be connected? How much does mommy pay for the clotheslines when one piece costs 24kč?
Millimeters 3903
The surface area of one cube wall is 2500 square millimeters. Determine the cube's surface, the length of its edge, and its volume.
Cube 5
The surface area of one cube wall is 32 square centimeters. Determine the length of its edges, its surface, and volume.
Cube edge
Determine the cube's edges when the surface is equal to 37.5 cm square.
Expression - powers
Find the value of the expression: (27^-1) · 9³

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