Problem 1
An after-school club prepared 26 pencils. Four boxes held five pencils each. How many pencils were left outside the boxes?
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An after-school club prepared 26 pencils. Four boxes held five pencils each. How many pencils were left outside the boxes?
Seven trees grow along the path. There are exactly three meters between neighboring trees. How many meters from the first tree to the last?
A rectangular postcard has sides of 5 cm and 8 cm. How many centimeters is its perimeter?
Nadya has three plain T-shirts and four different hats. In how many ways can you choose one T-shirt and one hat?
The traveler read 18 pages in the morning and 15 in the evening. The chapter was 48 pages long. How many pages of the chapter has he not read yet?
There are six rows of seven chairs in the hall. There are bags on five chairs, the rest are empty. How many chairs are free?
In the calendar, Friday falls on the 4th. What date will it be on Friday in two weeks?
Of the 52 apples, we filled six bags, putting seven in each. How many apples are left?
Exactly one hour was set aside for a tour. The journey took 15 minutes, and visiting the tower took 20 minutes. How many minutes were left for the garden?
Four rows of nine seats were set up for a concert. Five seats were reserved for guests. How many seats were available for the rest of the audience?
Problem 1. Answer: 6
There are 20 pencils in the boxes, there are 6 left outside.
Problem 2. Answer: 18
There are six 3-meter gaps between seven trees. It turns out 18.
Problem 3. Answer: 26
A rectangle has two sides of 5 cm and two of 8 cm: 26 cm.
Problem 4. Answer: 12
Each of the three T-shirts goes with four hats: 3 × 4 = 12 combinations.
Problem 5. Answer: 15
33 pages have been read, which means there are 48 − 33 = 15 left.
Problem 6. Answer: 37
Total 42 chairs, occupied by 5 bags. Free 37.
Problem 7. Answer: 18
There are 14 days in two weeks, so the next required date is the 18th.
Problem 8. Answer: 10
There are 42 apples in the bags, 10 left.
Problem 9. Answer: 25
There are 60 minutes in an hour. After the road and the tower there are 25 left.
Problem 10. Answer: 31
There are 36 seats in total. 5 are reserved, leaving 31 for everyone else.