Grade6 Number Sense
1. **Place Value**
- a) The place value of 4 in 4,582,307 is million because it is in the seventh position from the right.
- b) The place value of 4 in 7,345 is tens because it is in the second position from the right.
- c) The place value of 2 in 98,025 is tens because it is the second digit from the right in the whole number portion.
2. **Write the number in words**
- a) 345,678 is written as "three hundred forty-five thousand six hundred seventy-eight".
- b) For decimal parts: 6 tenths, 7 hundredths, 8 thousandths means the decimal part is 0.678.
3. **Standard form:**
- "Three million, twenty-five thousand, nine" is written as 3,025,009. (Note: The user wrote 3,250,900 but that is not correct)
4. **Compare numbers**
- a) 563,201 > 562,901 is True because 563,201 is greater.
- b) 45.70 = 45.70 since both values are equal.
5. **Order numbers least to greatest:**
- The numbers are 482,307; 453,999; 458,732.
- Ordered: 453,999 < 458,732 < 482,307.
6. **Value of underlined digits in decimals:**
- a) 3.715, underlined digit 7 is in the hundredths place, value = 0.07.
- b) 0.429, underlined digit 4 is in the tenths place, value = 0.4.
7. **Order decimals smallest to largest:**
- Decimals: 0.53, 0.5, 0.503
- Order: 0.5 < 0.503 < 0.53
8. **Write 0.6 in words:**
- "Six tenths"
9. **Convert fractions to decimals:**
- a) ½ = 0.5 (not 1.2)
- b) ¾ = 0.75 (not 3.4)
10. **Convert decimals to fractions:**
- a) 0.25 = ¼
- b) 0.6 = ⅗, or 3/5
11. **½ as percentage:**
- ½ = 50% (not 0.1%)
12. **Whole number operations:**
- a) 345 + 256 = 601
- b) 720 - 458 = 262 (not 178)
13. **Multiplication:**
- a) 234 × 5 = 1170
14. **Division:**
- a) 482 ÷ 7 = 68.857 (approx), certainly not 5374
15. **Decimal addition:**
- 2.5 + 3.45 = 5.95 (not 5.50)
16. **Decimal subtraction:**
- 6.3 - 2.8 = 3.5 (not 5.6)
17. **Decimal multiplication:**
- 2.4 × 0.6 = 1.44
18. **Decimal division:**
- 4.8 ÷ 0.12 = 40
19. **Convert to percentage:**
- a) 0.25 = 25%
- b) ¾ = 75%
20. **Convert to decimal:**
- a) 50% = 0.5
- b) 25% = 0.25
21. **Discount calculation:**
- 25% of 40 = 0.25 × 40 = 10
- Price after discount = 40 - 10 = 30
22. **Percent calculation:**
- 25 out of 100 = 25%
Final Notes: Some answers in the test are incorrect and have been corrected here for accuracy.