09 Some students of class II, face difficulty in the addition of two digit numbers involving 'carrying over'. Reasong behind this problem is lack of 1. interest in mathematics 2. understanding of difference 3. understanding the importance of zero 4. understanding of regrouping process

11 Which of the following statements is true in the context of teaching 'measurement' to primary class students? 1. standard measures should be followed by non-standard measures 2. non-standard measures should be followed by standard measures 3. only non-standard measures should be used 4. non-standard measures should not be used

13 Which of the following teaching-learning resources would be the most appropriate to teach the concept of addition of two decimal numbers? 1. geo board 2. beads and string 3. graph paper 4. abacus