Operaciones básicas
(-25) + 48 - (-17)
40
2x+3=5x-9
x=4
rectangle has a length of 8 cm and a width of 5 cm.
Find its perimeter.
26 cm
A cars travel 90 km in 1.5 hours. What is its speed?
60 km/h
125 - (-75) - 200
0
x=14
A triangle has a base of 10 cm and a height of 6 cm. Find its area.
30 cm²
A store applies a 20% discount on a $150 item. What is the final price?
5/6+2/3-1/4
11/2
5(x-2)≤ 3x+4
x≤ 7
A square has a perimeter of 48 cm. Find its area.
144 cm²
the sum of three consecutive even numbers is 48. Find the numbers.
14, 16, 18
5/6(12/15)+1/2
7/10
x/3+4=2x-5
x=
27/5
A circle has a diameter of 14 cm. Find its circumference and area (Use π ≈ 3.14).
Circumference = 43.96 cm
Area = 153.86 cm²
A farmer has 120 apples. He sells 1/3 of them in the morning and 1/4 of the remaining apples in the afternoon. How many apples does he have left?
Final count: 80 - 20 = 60 apples left
8/9÷4/3+2/5
2/3
2(x+5)> 4x-2
x< 6
A rectangular swimming pool is 20 meters long and 10 meters wide. It has a 5-meter-wide walkway around it. Find the total area covered by the pool and the walkway.
Walkway area = 600 - 200 = 400 m²
A group of friends goes to a restaurant and spends $240 in total. They split the bill equally, but 2 people leave before paying, so each remaining person has to pay $10 more. How many people were in the group originally?
we get 6 people originally.