Một quầy bán hàng có 48 gói kẹo gồm loại 0,5kg; loại 0,2kg và loại 0,1kg. Khối lượng cả 48 gói là 9kg. Hỏi mỗi loại có bao nhiêu gói (biết số gói 0,1kg gấp 3 lần số gói 0,2 kg) ?

Một người bán hàng đã thu được 110 tờ tiền gồm 3 loại mệnh giá là 5 đô la, 2 đô la và 1 đô la. Tổng giá trị của số tiền là 250 đô la. Trong đó số tờ 2 đô la gấp đôi số tờ 1 đô la. Hỏi mỗi loại tiền đó có bao nhiêu tờ?

Có 145 tờ tiền mệnh giá 5000 đồng , 2000 đồng  và 1000 đồng. Số tiền của 145 tờ tiền giấy trên là 312000 đồng. Số tiền loại mệnh giá 2000 đồng gấp đôi loại 1000 đồng . Hỏi mỗi loại tiền có mấy tờ ?

Ten bags each contain a different number of candies from one to ten. Five boys each took two bags of candies. Alex got five candies, Bob got seven candies, Charles got nine, and Dennis got fifteen. How many candies did Eric get ?

George starts training at five in the afternoon. The walk from hí house to the bus stop takes 5 minutes. The bus journey takes 15 minutes. It takes George 5 minutes to walk from the bus stop to the field. The bus arrives to his stop every 10 minutes from six in the morning. At what time at ther latest does George have to leave his house to arrive at the field exactly on time ?

A small zoo has a giraffe, an elephant, a lion and a turtle. Susan wants to plan a tour where she sees exactly two different animals. She does not want to start with the lion. How many different tours can she plan ?

Zosia has hidden smileys  in some of the cells of the table. In some of the other cells she writes the number of smileys in the neighbouring cells as shown in the picture. Two cells are said to be neighbouring if they share a common side or a common corner. How many smileys has she hidden ?

Kate has 4 flowers, one with 6 petals, one with 7 petals, one with 8 petals and one with 11 petals.

Kate choose three flowers and tears off one petal from each flower. She does this several times, choosing any three flowers each time. She stops when she can no longer tear one petal from three flowers. What is the smallest number of petals which can remain ?

In how many ways can Josie cut out a T-shape like   with exactly one shaded cell from the rectangle in the figure below ?

Ann has seven cards with letters as shown in the picture

Which other card does she need in order to make the word KANGAROO ?

In Ryan’s yard rabbits and squirrels left tracks in the show.

How many animals were there if each animal only walked through once ?

How many triangle are there in the picture ?

Find the missing part of the house ?

Five ladybugs live on a bush. How many spots, in total, do the ladybugs have ?

Eric had ten equal metal strips

He crewed pairs of them together into five long strips as shown below

Which strip is the shortest ?

Which of the scarecrows has a pointy hat, a checkered shirt, and three patches on its pants ?

Marko has 9 candies and Tomo has 17 candies. How many candies does Tomo need to give to Marko so that each boy will have the same number of candies ?

Don made two bricks by sticking cubes together as shown below

Which structure could not be built using the two bricks ?

Six towers were built with grey cubes and white cubes. Each tower was made with five cubes. Cubes of the same colors do not touch. How many white cubes are there ?

Kanga can jump from one circle to the next only if they are connected by a line. She cannot jump into any cirrle more than once. Kanga starts from circle S ad makes exactly 4 jumps to get to circle F

In how many different ways can Kanga do this ?

What is the minimum number of shapes that must be removed so that only shapes of one type will remain ?

Put the numbers 1, 2, 3, 4, 5 in the boxes so that everything is correct

Which number goes into the box marked with the question mark ?

A ship was attacked by pirates. One by one they climbed a long rope ladder to get to the ship. The pirate captain was in the middle. If the captain was the eighth pirate to get on the ladder, then how many pirates were there on the ladder ?

The numbers 3, 5, 7, 8 and 9 were written into the squares so that the sum of the numbers in the row is equal to the sum of the numbers in the column. Which number was written in the centre square ?

Basil attached five stickers with the digits 1, 2, 3, 4, 5, in some order on a sheet of paper as shown in the picture.

In what order could Basil have put the stickers ?