Puzzles and questions

Problem

Cars are parked in 3 rows, with 15 cars in each row. The car park opens at 7 o'clock. How many cars are there in the car park? Which information is not needed to answer this question?

Problem

A plot of land is a rectangle with sides 12 m and 8 m. Which question does the calculation 12 − 8 answer?

Problem

In a magic square the numbers in every row, every column and both diagonals add up to the same total. 24 | 22 | ☐ 34 | 26 | 18 20 | 30 | 28 Which number goes in the cell ☐?

Problem

The pool is 50 m long. Mary swam 14 lengths of the pool. The water in the pool is 30 °C. How many metres did Mary swim? Which information is not needed to answer this question?

Problem

John had 17 zloty and bought 2 notebooks at 4 zloty each. Which question does the calculation 17 − 2 · 4 answer?

Problem

In a magic square the numbers in every row, every column and both diagonals add up to the same total. 13 | … | 21 ☐ | 15 | 7 9 | 19 | … The cells with dots (…) are empty too. Which number goes in the cell ☐?

Problem

An orchard has 5 rows of apple trees, with 6 trees in each row. 40 kg of apples were picked from each tree. The orchard was planted 11 years ago. How many kilograms of apples were picked in the whole orchard? Which information is not needed to answer this question?

Problem

A cinema ticket costs 18 zloty for a child and 29 zloty for an adult. A family bought 4 child tickets and 2 adult tickets. Which question does the calculation 29 − 18 answer?

Problem

In a magic square the numbers in every row, every column and both diagonals add up to the same total. 16 | 37 | ☐ … | 25 | 19 28 | 13 | 34 The cells with dots (…) are empty too. Which number goes in the cell ☐?

Problem

The pool is 25 m long. Ola swam 18 lengths of the pool. The water in the pool is 24 °C. How many metres did Ola swim? Which information is not needed to answer this question?