MOM & ME competition Grade 7 J

My calculator has gone mad. If I want to multiply, it divides, and if I want to add, it subtracts. I type in (12×3)+(4×2)=. Which result will it give me?

• 2

• 12

• 20

• 28

. What result of the following additions is not a prime number?

• 2 + 11

• 4 + 7

• 6 + 11

• 5 + 7

Carlos wants to square the sum of three chosen numbers from the list -5, -3, -1, 0, 2, 7. What is the smallest result he can get?

• 0

• 1

• 4

• 9

Three rings are connected to each other as shown. Which of the following pictures also shows three rings connected in the same way?

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Three of the following four diagrams can be drawn without lifting the pencil and without going over a line twice. For one diagram this is not true. Which one is it?

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. Julia reads a book whose pages are all numbered. The digit 0 appears five times and the digit 8 six times. What is the page number of the last page?

• 58

• 60

• 68

• 88

The following information is known about triangle PSQ: QPS = 20°. The triangle PSQ has been split up into two smaller triangles by the line QR as shown. It is known that PQ = PR = QS. How big is the angle RQS?

• 50

• 60

• 65

• 70

. If the letters of the Word MAMA are written underneath each other then the word has a vertical axis of symmetry. For which of these words does that also hold true?

• ADAM

• BOOT

• TOTO

• LOGO

The fence on the right has many holes. One morning the fence falls over and lies on the floor. Which of the following pictures shows the fallen down fence?

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. A large rectangle is made up of 9 equally big rectangles. The longer side of each small rectangle is 10 cm long. What is the perimeter of the large rectangle?

• 76 cm

• 81 cm

• 90 cm

• 100 cm