Sample questions
1.655, , 665, 670, , 680
2.436, 438, , 442, 444,
3.265, , 275, 280, 285,
4.51, 53, 55, , 59,
5.640, 642, 644, , 648,
6.0, , , 300, 400, 500
7.100, , 300, , 500, 600
8.794, 799, , , 814, 819
Fill in the missing numbers in a counting pattern.