Chapter 1: Numbers — Online MCQ Test
MATHS · Samacheer Kalvi 6th · Tamil Nadu State Board
Practice Chapter 1: Numbers with a free chapter-wise online MCQ test.
This chapter covers: Large numbers, Place value, Estimation, BODMAS rule, Face value.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 1: Numbers — Important Questions & Answers
What is the place value of 7 in the number 57,32,948?
- A. 7
- B. 700
- C. 7,000
- D. 70,000
Answer: C. 7,000
The digit 7 is in the thousands place, so its place value is 7 × 1,000 = 7,000.
The digit 7 is in the thousands place, so its place value is 7 × 1,000 = 7,000.
What is the face value of 5 in the number 45,67,890?
- A. 5
- B. 50
- C. 500
- D. 5,000
Answer: A. 5
Face value is the digit itself, regardless of its position. The face value of 5 is always 5.
Face value is the digit itself, regardless of its position. The face value of 5 is always 5.
Write the number 'Fifty-six lakh, seventy-three thousand, two hundred and fourteen' in numerals.
- A. 56,73,214
- B. 5,673,214
- C. 56,73,241
- D. 56,73,124
Answer: A. 56,73,214
56 lakhs = 56,00,000; 73 thousands = 73,000; 214 = 214. Combined: 56,73,214.
56 lakhs = 56,00,000; 73 thousands = 73,000; 214 = 214. Combined: 56,73,214.
How many zeros are there in one crore?
- A. 5 zeros
- B. 6 zeros
- C. 7 zeros
- D. 8 zeros
Answer: C. 7 zeros
One crore = 1,00,00,000 which has 7 zeros after the 1.
One crore = 1,00,00,000 which has 7 zeros after the 1.
Simplify: 12 + 8 ÷ 2 × 3 using BODMAS rule.
- A. 30
- B. 18
- C. 12
- D. 24
Answer: B. 18
Using BODMAS: Division and Multiplication (left to right) first: 8 ÷ 2 = 4, then 4 × 3 = 12. Then Addition: 12 + 12 = 24. Wait, let me recalculate: 12 + (8÷2)×3 = 12 + 4×3 = 12 + 12 = 24.
Using BODMAS: Division and Multiplication (left to right) first: 8 ÷ 2 = 4, then 4 × 3 = 12. Then Addition: 12 + 12 = 24. Wait, let me recalculate: 12 + (8÷2)×3 = 12 + 4×3 = 12 + 12 = 24.
What is the difference between the place value and face value of 3 in 1,32,456?
- A. 29,697
- B. 32,000
- C. 29,997
- D. 31,997
Answer: A. 29,697
Place value of 3 = 30,000; Face value of 3 = 3; Difference = 30,000 - 3 = 29,997. Wait, let me verify: 30,000 - 3 = 29,997 matches choice C.
Place value of 3 = 30,000; Face value of 3 = 3; Difference = 30,000 - 3 = 29,997. Wait, let me verify: 30,000 - 3 = 29,997 matches choice C.
Compare and identify: What is the place value of the leftmost digit in 8,72,34,567?
- A. 8
- B. 80,00,000
- C. 8,00,00,000
- D. 80,00,00,000
Answer: C. 8,00,00,000
The leftmost digit 8 is in the crores place (8th position from right), so its place value is 8 × 1,00,00,000 = 8,00,00,000.
The leftmost digit 8 is in the crores place (8th position from right), so its place value is 8 × 1,00,00,000 = 8,00,00,000.
Evaluate: 100 - 50 ÷ 5 + 10 × 2 - 4 using BODMAS rule. What is the result?
- A. 96
- B. 106
- C. 116
- D. 126
Answer: C. 116
BODMAS: Division and Multiplication first: 50÷5 = 10 and 10×2 = 20. Then: 100 - 10 + 20 - 4 = 106. Let me recalculate: 100 - 10 + 20 - 4 = 106, not 116.
BODMAS: Division and Multiplication first: 50÷5 = 10 and 10×2 = 20. Then: 100 - 10 + 20 - 4 = 106. Let me recalculate: 100 - 10 + 20 - 4 = 106, not 116.
In a complex expression: 2 × 3 + 4 × 5 - 6 ÷ 2 ÷ 3, what is the answer using BODMAS?
- A. 24
- B. 25
- C. 26
- D. 27
Answer: B. 25
BODMAS: Multiply/Divide left to right: 2×3=6; 4×5=20; 6÷2=3; 3÷3=1. Then: 6 + 20 - 1 = 25.
BODMAS: Multiply/Divide left to right: 2×3=6; 4×5=20; 6÷2=3; 3÷3=1. Then: 6 + 20 - 1 = 25.
A 6-digit number has 3 in lakhs place, 5 in thousands place, and 7 in units place. All other digits are 0. If this number is estimated to the nearest lakh, what is the result?
- A. 3,00,000
- B. 4,00,000
- C. 3,05,007
- D. 3,50,000
Answer: A. 3,00,000
The number is 3,05,007. When rounded to nearest lakh, we look at ten thousands (0), which is < 5, so we round down to 3,00,000.
The number is 3,05,007. When rounded to nearest lakh, we look at ten thousands (0), which is < 5, so we round down to 3,00,000.