Maths quizzes
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This document contains 5 math quiz questions with their corresponding answers. The first question asks to identify the wrong step in a proof that attempts to show 2 = 1 by dividing by zero. The next two questions ask to identify the biggest number with 4 ones and the smallest two-digit integer. The last two questions ask to count the triangles and rectangles in given figures. The answers provided identify the division by zero error and give the numerical answers to the remaining questions.
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Maths quizzes
- 1. Maths Quiz 1: Finding Wrong Step in the Proof of 2 = 1 What is wrong with this proof of 2 = 1? If a = b ⇒ a2 = ab ⇒ a2 - b2 = ab - b2 ⇒ ( a + b) (a - b) = b(a - b) ⇒ a + b = b ⇒ b + b = b ⇒ 2b = b ⇒ 2 = 1
- 2. Maths Quiz 2: Finding the Biggest Number Can you name the biggest number that can be written with four 1’s? Maths Quiz 3: Finding the Smallest Integer Can you name the smallest integer that can be written with two digits?
- 3. Maths Quiz 4: Count the Triangles How many triangles are there in the given figure?
- 4. Maths Quiz 5: Count the Rectangles How many rectangles are there in the given figure?
- 5. Answers Maths Quiz 1: Finding Wrong Step in the Proof of 2 = 1 Ans: Since a = b, a - b = 0, Hence, division by zero is not possible in the 4th step. Maths Quiz 2: Finding the Biggest Number Ans: 1111 = 285311670611 Maths Quiz 3: Finding the Smallest Integer Ans: 1/1, 2/2, 3/3,…..9/9
- 6. Answers Maths Quiz 4: Count the Triangles Ans: There are 47 different triangles. Maths Quiz 4: Count the Rectangles Ans: There are 12 rectangles.
- 7. eAcademy Hub