Subtraction - practice for 13 year olds - page 14 of 15
Number of problems found: 284
- Garden
The garden has a rectangular shape with lengths of 25 and 40 meters. It has been expanded so that each of its sizes increased by one-fifth. How many square meters increased its acreage? - Cube 5
The surface of the cube is 15.36 dm². How will change the surface area of this cube if the length of the edges is reduced by 2 cm? - Brackets
Place one pair of brackets in the expression 20-16 + 10 - 4 - 2 so that the result will be 0. - Railway
Between points A and B, whose horizontal distance is 1.5 km, the railway line has an 8 permille climb. Between points, B and C with a horizontal distance of 900 m are climbed 14 permille. Calculate differences in altitudes between points A and C.
- Internal and external angles
Calculate a triangle's remaining internal and external angles if you know the internal angle γ (gamma) = 34 degrees and one exterior angle is 78 degrees and 40 '. Determine what kind of triangle it is from the size of its angles. - Annulus
Calculate the area of two circles annulus k1 (S, 3 cm) and k2 (S, 5 cm). - Travel by bus
Five girls are traveling by bus. Each holds in each hand two baskets. Each basket contains five cats. Each cat has five kittens. Three girls getting off the bus and another girl without baskets go on board. The bus control driver. How many legs are on the - The star
Find the area of the shaded part of the square with a side of 22 cm. - Annulus
Two concentric circles form an annulus of a width of 10 cm. The radius of the smaller circle is 20 cm. Calculate the area of the annulus.
- Plums
In the bag was to total 136 plums. Igor took 3 plums, and Mary took 4/7 from the rest. How many plums remained in the bag? - Stock
Enterprise sold 7/12 of its products to foreign markets, and 2/5 of the remainder was sold at home. How many % of the products are still in stock? - Clock Tower
What angle is between hands-on Clock Tower when it shows 17 hours and 35 minutes? - Square and circle
Into the square is an inscribed circle with a diameter of 10 cm. What is the difference between circumference square and circle? - Mrs XY
Mrs. Novak is employed. In January 2015, the gross income reached € 1348. Insurance is a 323.52 euro and income tax 153.67 euros. Employer precipitated Mrs. Novak in recent clashes € 115, of which 57 euros for the savings account, and 58 euros for repayme
- Vectors
Vector a has coordinates (8; 10), and vector b has coordinates (0; 17). If the vector c = b - a, what is the magnitude of the vector c? - Complementary angles
Two angles are complementary. If one angle measures 10°, what is the measure of the second angle? - Flowerbed 2
Around the square flower bed in a park is a sidewalk about 2 m wide. The area of this sidewalk is 243 m². What is the area of the flowerbed? - ABS
What is the value of ||-81|-|-90||? - Root
The root of the equation (x-10)² +4 = x² +35x is (equal or greater or less than zero). ...
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Subtraction practice problems. Maths practice for 13 year olds.