3-Digit Number Sense( Week 24 Evaluation) 1. Round 463 to the nearest hundred's place. 2. Write down all the three digit numbers that can be made using 1, 2, and 3. Separate each number by a comma. 3. By turning a page upside down, some page numbers still show the exact same numbers. Examples of such page numbers are 1, 69, 808,.... How many such numbers from 1 to 997? 4. 431 is a 3-digit number with each digit less than the digits in higher place values, i.e 3 < 4 and 1 < 3. How many such 3-digit number(s) are there between 100 and 199? 5. How many 3-digit numbers are there with the sum of digits equal to 3? 6. 232 is a symmetric 3-digit number with the ones digit equal to the hundreds digit. How many such 3-digit number(s) are there between 670 and 759 inclusively? 7. 263 is a 3-digit number with the product of the ones digit and the hundreds digit equal to the tens digit, i.e 2 × 3 = 6. How many such 3-digit number(s) are there between 910 and 989 inclusively? 8. 431 is a 3-digit number with digits in descending order from left to right, i.e 3 < 4 and 1 < 3. There are 12 3-digit number(s) between 750 and 810 inclusively with digits in descending order. What are these 12 numbers? 9. 135 and 531 are a pair of 3-digit numbers with digits reversed on each other. Their difference is 531 − 135 = 396. How many pairs of such 3-digit numbers (with the difference of 396) are there? 10. 624 and 257 are two 3-digit numbers where the difference between the ones digit and the hundreds digit equals to the tens digit, i.e 6 − 4 = 2 and 7 − 2 = 5. How many such 3-digit number(s) are there between 170 and 219 inclusively? |