1. Two monkeys are sitting on each branch of a tree. How many monkeys are sitting on two branches? Set down this sum and solve it.
2. There are 6 boys in each of the two football teams. How many boys altogether are there in the two teams?
3. The girl has drawn 4 flowers. Each flower has 8 petals. How many petals do all 4 flowers have?
4.* A boy thinks of a number, multiplies it by 2, then adds 3. The result is 11. What is the number he first thought of?
5. There are 12 oranges on a plate. Mother takes half of the oranges and divides them equally between her three children. How many oranges does she give to each child?
6. The train has travelled 240 kilometres in 4 hours. How fast is it travelling?
7. Continue with this problem following the pattern.
Numbers 81 and 9 65 and 5 72 and 8
Sum 90
Difference 72
Product 729
Quotient 9
8. There were 12 monkeys in a Zoo, but there were 5 fewer tigers. How many monkeys and tigers did the Zoo have altogether? Write down you answer.
9. There were 25 peaches divided between 2 plates held 1 peach more than the other. How many peaches were on each plate? Write down the answer.
10. There are 24 white swans plus half as many black swans swimming in a like. How many swans are in the lake altogether ?
11. Three brothers have one sister each. How many children are there in the family?
12. Two fathers and two sons buy 3 oranges. Everybody has one orange each. How is this possible?
13. 65 coconuts were picked. 25 were put in one basket and the rest divided equally among 2 more baskets. How many coconuts did each basket have?
14. A boy bought 12 notebooks, twice as many boy bought. How many notebooks altogether did the boys buy?
15* A girl bought 10 toy elephants, another one bought 2 fewer elephants. A third girl bought as many as the first two girls put together. How many elephants did the third girl buy?
16. Ask your friend to think of a number, and then add 4 to it. Ask him to multiply the result by3,subtract 7 from the total and then subtract a further 5. Guess what was your friend`s number by the result.
17.* A boy gives his sister half of his tangerines and one more. Then he has no tangerines at all. How many tangerines did he the first place?
18. The girl has eaten 3 sweet and then wants to eat another one. How many sweets has she eaten?
19.* The brother is 3 years old now. His sister was 5 years older than he was 2 years ago. How old is she now?
20. Put your two hands on a table: your ten fingers will serve as a «computer». Count
from left to right. Say for instance, you want to multiply 4 by 9. The fourth finger gives
you the answer: there are 3 fingers to the left and 6 fingers to the right of it, so the
result is 36.
Another example: what is 7 times 9? The seventh finger has 6 fingers to the left and 3
fingers to the right. So 7 * 9 gives you 63.
21.* There were 17 white butterflies flying in a forest meadow and twice as many. How butterflies altogether were flying in the forest meadow?
22.* The lesson begins at 30 minutes past 8 (8.30) and last 45 minutes. When does it
end?
The break lasts 10 minutes. When does the next lesson begin and end?
The lessons begin at 8.30 and 5 hours later. What time do they end?
23.* 12 brothers are walking along in a single file. They never overlap but follow one behind the other. What are their names?
KEYS TO THE PROBLEMS.
4. The number thought of by a boy is 4. To guess the number you must subtract 3 from 11
and divide the result by 2.
12. There are three men in the family: grandfather, father and son.
13. The second and the third baskets had 20 coconuts each.
14. 18 notebooks.
15. 18 elephants.
16. To guess your friend’s number you must divide the result by 3.
17. 2 tangerines.
18. 3 sweets.
19. 8 years old.
21. 51 butterflies.
22. at 9.15; at 9.25; at 10.10
23. Their names are January, February, March…