Examples of equations for practice for 12 year olds - page 29 of 59
Number of problems found: 1180
- Given
Given 2x =0.125, find the value of x
- Budget plan
In the construction of the building, the planned budget exceeded 13%, which was 32,500 euros. How many euros did it cost to build the building?
- Land area 2
A land area was divided among the three heirs in the ratio of 5:2:4. If the largest share was 20 hectares of land, what is the total land area? Please show your solution and what kind of proportion it is.
- Reciprocal equation 3
Solve a reciprocal equation: 1/2 + 2/3=1/x
- Equation 29
Solve the next equation: 2 ( 2x + 3 ) = 8 ( 1 - x) -5 ( x -2 )
- My father
My father has a big farm. He planted 6/8 of it with mango trees, 1/2 of the remainder are guava trees, and the remaining 10 trees are santol trees. What is the number of all trees?
- Fruits
Amy bought a basket of fruits 1/5 of them were apples,1/4 were oranges, and the rest were 33 bananas. How many fruits did she buy in all?
- Negative in equation
2x + 3 + 7x = – 24, what is the value of x?
- Digit sum
How many are three-digit numbers that have a digit sum of 6?
- Two rectangles
I cut out two rectangles with 54 cm² and 90 cm². Their sides are expressed in whole centimeters. If I put these rectangles together, I get a rectangle with an area of 144 cm². What dimensions can this large rectangle have? Write all options. Explain your
- Supposed 6641
The snail is supposed to climb a 5 meter high wall. It rises 3 meters every day, but at night, it falls 2 meters down. How many days will it climb the wall?
- Remaining 6638
The farm (ZD) grows corn on a third of its land, barley on a quarter, half of the remaining acreage is planted with clover, and the last 9 ha is reserved for growing cabbage. What is the size of the farm?
- Solve: 6632
For n ϵ N solve: 100 = (0.01n)²
- Circumference 6598
Adam had three identical rectangles. He put them together and got a rectangle with a circumference of 50 cm. Then, he placed them differently and got a rectangle with a larger circumference. Calculate its perimeter.
- Pupils 6579
There are 169 pupils, 45 rooms, how many rooms are three beds and how many five beds?
- Book reading
If we read the book at a speed of 15 pages a day, we read it three days before we read it at a speed of 10 pages per day. If I read six pages per day, how many days will I read the book?
- Percent 6567
Jana spent CZK 366 on books, which was 75 percent of her savings. How much CZK did Jana have saved?
- Equations: 6562
Solve the equations: (3n-3) / 3 = (9 + 2n) / 2 2x / 4 - 3 = 1 / 2x + 1
- Fractions: 6543
Solve the equation with fractions: x / 3-x / 8 = x / 12 + x / 8
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