The Transport Museum
CBSE · Class 4 · Mathematics
Flashcards for The Transport Museum — CBSE Class 4 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is 7 × 10?
Answer
7 × 10 = 70 When we multiply by 10, we get 7 tens, which equals 70. The pattern is: add a zero to the end of the number.
How do you find 5 × 15 using the splitting method?
Answer
5 × 15 = 5 × (10 + 5) = (5 × 10) + (5 × 5) = 50 + 25 = 75 We split 15 into 10 and 5, then multiply each part separately and add.
What is the pattern in the times-15 table?
Answer
In the times-15 table: - The ones digits follow the pattern: 5, 0, 5, 0, 5... - Each product is 3 times the corresponding product in the times-5 table - Example: 4 × 5 = 20, so 4 × 15 = 60 (which is 3…
How do you calculate 6 × 14 using the doubling method?
Answer
6 × 14 = 6 × (7 + 7) = (6 × 7) + (6 × 7) = 42 + 42 = 84 We split 14 into two equal parts (7 + 7), multiply by one part, then double the result.
What is 25 × 10?
Answer
25 × 10 = 250 25 × 10 = 25 tens = 250 When multiplying by 10, we add one zero to the number.
How do you solve 26 × 20?
Answer
26 × 20 = 26 × (2 × 10) = (26 × 2) × 10 = 52 × 10 = 520 Or: 26 × 20 = 26 × 2 tens = 52 tens = 520…
Using the grid method, how do you calculate 15 × 14?
Answer
Split into: 15 = 10 + 5, 14 = 10 + 4 × | 10 | 4 -----|-----|----- 10 | 100 | 40 5 | 50 | 20 Add all parts: 100 + 40 + 50 + 20 = 210 So 15 × 14 = 210…
What does remainder mean in division?
Answer
Remainder is the number left over when one number doesn't divide evenly into another. Example: 17 ÷ 5 = 3 remainder 2 Because 5 × 3 = 15, and 17 - 15 = 2 So 2 is the remainder.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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