REET Level 1 study notes
Numbers and Number System for REET L1 Primary Teachers
For REET Level 1, numbers and the number system include the Indian place-value chart, comparison and ordering of multi-digit numbers, number names up to lakh, Class V level Roman numerals, and the early concepts of even, odd, prime and composite numbers. The teacher should move from concrete material such as bundles, dice and place-value blocks to pictures and then to numerals. A candidate must be able to read the place value of any digit, distinguish face value from place value, compare numbers digit by digit and choose a teaching activity that protects understanding. Avoid Class VI material such as integers, exponents and irrational numbers; the Level 1 syllabus is limited to Classes I to V.
Key points
- REET L1 Numbers and Number System stays inside Classes I to V; integers and exponents belong to upper primary.
- Indian place value names are ones, tens, hundreds, thousands, ten thousands, lakh, ten lakh and crore.
- Place value of a digit equals the digit times its position value, while face value is the digit itself.
- Roman numerals at Class V level cover I, V, X, L and C with simple addition and subtraction rules.
- 1 is neither prime nor composite; oddness alone does not make a number prime, since 9 is composite.
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For REET Level 1, numbers and the number system include the Indian place-value chart, comparison and ordering of multi-digit numbers, number names up to lakh, Class V level Roman numerals, and the early concepts of even, odd, prime and composite numbers. The teacher should move from concrete material such as bundles, dice and place-value blocks to pictures and then to numerals. A candidate must be able to read the place value...