Addition practice problems - page 20 of 78
Number of problems found: 1554
- Theater seat rows
The theater has 20 rows of seats on the ground floor. There are 16 seats in the first row, and each subsequent row has two more seats than the previous one. Find the number of seats on the ground floor of the theater. - Circus sector seats
In a circus, in one sector for spectators, the seats are arranged in such a way that in each higher row, there is one more seat than in the previous one. How many seats are there in a sector with 22 rows if there are 8 seats in the first row? - Mason house addition
8 masons build a house in 630 days. How many masons must we add after 150 days to complete the whole house in 320 days? - Ground speed
The plane flies south at an average speed of 190 km/h, and the wind blows from west to east at a speed of 20 m/s. How fast and in what direction (relative to the meridian) will the plane move relative to the ground? - Denominator numerator difference
The denominator is 1628 larger, than the denominator. What is the difference? - Number sum subtraction I think of three numbers; when I add them, I get 16; when I subtract the third from the sum of the first two numbers, I get 10; when I subtract the second from the sum of the first and third numbers, I get 8. Which numbers do I think?
- In one There are 13 spines and 7 entrances in a panel house. In each entrance, there are 2 three-room and 1 two-room apartments in each of the nine spines, and in the remaining four floors, there are always 1 four-room and 2 two-room apartments on each floor. Ca
- Because of
Due to the large potato harvest this year, the farm bought a new, more powerful sorter in addition to the old one. Now both machines work simultaneously, and therefore the daily harvest is processed in 12 hours. If only the old machine were working, it wo - Marble color distribution
I have 100 marbles. One-quarter of them are white, and 3 fifths of the rest are blue. 1 third of those that are neither blue nor white are red, and the rest are green. How many marbles do I have? - Student trip home
Out of 30 students in the class, 2 thirds of the children were on a trip, and all the others were at home. How many students stayed at home? - Number addition multiplication If I add 5 to this number, I get the same result as multiplying it by 5. What is that number?
- Geometric sequence sum
Determine s5 of the geometric sequence if: a1 + a2 = 10 and a4 - a2 = 120 - Trainee triangular wedge Trainees stand on the marks in rows exactly 1.5 m apart. They form an expanding triangular wedge (in each subsequent row, there is one more exerciser), while the distance between the front exerciser and the back row is 30 m. Determine the number of traine
- Container water addition
There are 45 liters of water in a 50-liter container. How many liters of water will it contain if we add another 10 liters of water to it? - Oliver task calculation
Oliver calculated 12 tasks correctly, which was 8 more than the ones he calculated incorrectly. A-HOW MANY PROBLEMS DID OLIVER WRONG? B-how many tasks did he solve together? - Number digital sum Calculate the digital sum of the given numbers and arrange the results in descending order: 356,1078,39,4402
- Margaret savings gifts
Margaret bought Christmas presents with a quarter of her savings. How much did she save if the gifts cost CZK 160? Express the rest of the savings as a fraction. - Geometric sequence terms The two terms of the geometric sequence are a2=12 and a5=three halves. a) calculate the tenth term of the sequence. b) calculate the sum of the first 8 terms of the sequence. v) how many first terms of the sequence need to be added so that the sum is equa
- Arithmetic progression difference
Determine the difference d in AP if a1=3 and a1+a2=12 - School bun distribution
There were buns for lunch at school. The freshmen ate one-eighth of the buns. The sophomores ate two-eighths of the buns. Third and fourth graders ate three-eighths. How many eighths buns are left for the second stage?
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