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CTET Math Flashcards

7 cards from real CTET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 CTET Math flashcards as text

  1. Which of the following is an irrational number?

    Answer: √50

    √50 = 5√2, which cannot be expressed as p/q, so it is irrational.

  2. The speed of a boat in still water is 12 km/h and the speed of the stream is 4 km/h. Time taken to go 48 km downstream is:

    Answer: 3 h

    Downstream speed = 12 + 4 = 16 km/h; time = 48/16 = 3 hours.

  3. In a bar graph, if the scale is 1 cm = 50 units and a bar is 3.5 cm tall, what value does it represent?

    Answer: 175

    Value = 3.5 × 50 = 175 units.

  4. The LCM of two numbers is 120 and their HCF is 10. If one number is 40, the other number is:

    Answer: 30

    Product of numbers = LCM × HCF = 1200; other number = 1200/40 = 30.

  5. A student says '2 + 3 × 4 = 20'. This reflects a misconception about:

    Answer: Order of operations (BODMAS)

    The student added before multiplying, violating BODMAS where multiplication precedes addition.

  6. The angle subtended by a semicircle at the centre is:

    Answer: 180°

    A semicircle subtends an angle of 180° at the centre since it is half the circle.

  7. Which of the following best describes a 'mathematical error' as an assessment tool in CTET pedagogy?

    Answer: A window into student thinking and misconceptions

    CTET pedagogy treats errors as diagnostic tools revealing the learner's conceptual gaps.