Mathematical riddles and puzzle presentation. Math puzzles

Antipyretics for children are prescribed by a pediatrician. But there are emergency situations for fever when the child needs to be given medicine immediately. Then the parents take responsibility and use antipyretic drugs. What is allowed to give to infants? How can you bring down the temperature in older children? What medicines are the safest?

There are 35 students in the class. 20 of them are engaged in a mathematical circle, 11 in a biological circle, and 10 do nothing. How many kids do both math and biology? (6 people) In how many ways can 4 checkers be arranged on a drawn board so that no two of them are in the same row or column? (A)64; (B) 28; (C) 16; (D) 8; (E)4. In the addition example: * + * + ?? = ? ? ? different figurines replace different numbers. What number does the asterisk replace? (A) 9; (B) 8; (C) 7; (D) 6; (E) 5; Teams A, B, C, D and E participated in the handball tournament. Each team played each team exactly once. The game is awarded 2 points for a win, 1 for a draw, and 0 for a loss. At the same time, team B, which took second place, scored more points than C, D and E combined. It follows that (A) A won first place; (B) A beat B; (C) B beat C; (D) A and B tied; (E) such a result is impossible.

Mathematics Week 2014

Math puzzles

Mathematics teacher MBOU secondary school No. 18 p. Haragun 2014


1. The result of the addition. 2. How many numbers do you know? 3. The smallest three-digit number. 4. Hundredth of a number. 5. Device for measuring angles. 6. How many centimeters are in a meter? 7. How many seconds are there in a minute? 8. The result of the division. 9. How many years are in one century? 10. The smallest prime number. 11. How many zeros are there in the number "million"? 12. The value of the right angle. 13. When is the product equal to zero? 14. What is more than 2 m or 201 cm? 15. What is less than 200 or 0.5?

Warm up



Blitz quiz

1. Seven brothers have one sister each. How many children? 2. Which is lighter: a kilogram of cotton wool or a kilogram of iron? 3. Two sons and two fathers ate three eggs. How many eggs did each one eat? 4. A pair of horses ran 40 km. How many kilometers did each horse run? 5. What in Russia used to be called "broken numbers"? 6. What does each word, plant and equation have? 7. In the fairy tale "Humpbacked Horse" we meet the following words: "I'm coming - darkness to the people! Well, no exit, no entrance! How many people were there?


Divide a shape into two equal parts

How many triangles are in the drawing?



1. A figure consisting of two rays emanating from one point. 2. A figure consisting of three points that do not lie on the same straight line and three segments. 3. Part of a line lying between two points. 4. Unit of length. 5. A tool for measuring the length of a segment. 6. Main figure. 7. Tool for measuring angles. 8. What does the word "arithmetic" mean? 9. A line that has neither beginning nor end.

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Slides captions:

mathematical puzzles GKOU boarding school p. Parkovy Zemtsova Irina Anatolyevna

To drive ships, To take off into the sky, You need to know a lot, You need to be able to do a lot. To become a doctor, a sailor, Or a pilot, You must first of all know Mathematics.

Do you know the numbers? I round

An elephant has wings, but their number is equal.... 4 3 2 5 1 0 3 7 4 1

This number is often found in fairy tales 4 3 2 5 1 0 3 7 4 1

That figure, children, consists of a trunk and a miserable branch. 4 3 2 5 1 0 3 7 4 1

How many musicians are in the quartet? 4 3 2 5 1 0 3 7 4 1

Find the extra number 1 2 3 4 1 7 8 5

01 02 03 04 1 2 3 4

How old do you have to be to ride a bike on the highway? 12 years old 10 years old 14 years old 8 years old 1 2 3 4

Round II Unusual puzzles

There were chickens and dogs walking in the yard. The girl counted their paws. Got ten. How many chickens and how many dogs?

A rooster weighs 3kg on one leg. And how much will he weigh if he stands on 2 legs?

The dump truck drove to the village. Three cars were driving towards him. How many cars were going to the village?

If one corner of a table is sawn off, how many corners are left?

III round geometric figures

Which figure has no definition? 1 2 3 4 angle ray segment point

A part of a line that is bounded by two points? 1 2 3 4 angle ray segment point

What geometric figure is needed to punish children? 1 2 3 4 angle ray segment point

Which figure in Latin means "table"? 1 2 3 4

What figure in Greek means "pine cone"? 1 2 3 4

Blitz tour

1. Fourth month. 2. The result of the subtraction. 3. The sum of the lengths of the sides of the rectangle. 4. How many fingers are on 10 hands? 5. The largest two-digit number. 6. What is the name of the device for measuring segments? 7. How many millimeters are in 1 meter? 8. A quadrangle with all sides equal 9. What numbers do the pilots write in the sky? 10. The numbers I, V, X are called (April) (difference) (Perimeter) (50) (99) (ruler) (1000 mm) (square) (eights) (Roman)


On the topic: methodological developments, presentations and notes

Lesson - a business game "Working with a package of Power Point presentations." During the lesson, the repetition of the material "spreadsheets" using CIMs, the repetition of technology ...



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