Answer:
1.66 rounded to the nearest ten is 0, and to the nearest hundred is 0.
2.209 rounded to the nearest ten is 10, and to the nearest hundred is 200.
3.829 rounded to the nearest ten is 830, and to the nearest hundred is 800.
4.663 rounded to the nearest ten is 660, and to the nearest hundred is 700.
5.572 rounded to the nearest ten is 570, and to the nearest hundred is 600.
6.949 rounded to the nearest ten is 950, and to the nearest hundred is 900.