999998 is very close to 1000000. Check each rounding:<br><br>&bull; Nearest ten: ones digit is 8 (8 &ge; 5), round up &rarr; 1000000<br>&bull; Nearest hundred: tens digit is 9 (9 &ge; 5), round up &rarr; 1000000<br>&bull; Nearest thousand: hundreds digit is 9 (9 &ge; 5), round up &rarr; 1000000<br><br>Final Answer: 1000000, 1000000, 1000000