D. Count by 10s; then, write the missing numbers on the blanks.

1. 15, __, 35, __, 65
2. 8, __, __, 38, 48, __
3. 32, 42, __, __, 82
4. 101, __, __, 131, __, 151
5. 360, 370, __, 390, __

E. Count by 50s; then, write the missing numbers on the blanks.

1. 50, 100, __, __, 250, __, 350
2. 12, __, __, 112, __, __, 262
3. 185, 235, __, __, __

Let's examine each part of the question and find the missing numbers by counting in intervals of 10 and 50, as specified.
D. Count by 10s and fill in the missing numbers:

15, __, 35, __, 65
Start at 15, and count by 10s:
15, 25 , 35, 45 , 65




8, __, __, 38, 48, __
Start at 8, and count by 10s:
8, 18 , 28 , 38, 48, 58




32, 42, __, __, 82
Start at 32, and count by 10s:
32, 42, 52 , 62 , 82




101, __, __, 131, __, 151
Start at 101, and count by 10s:
101, 111 , 121 , 131, 141 , 151




360, 370, __, 390, __
Start at 360, and count by 10s:
360, 370, 380 , 390, 400





E. Count by 50s and fill in the missing numbers:

50, 100, __, __, 250, __, 350
Start at 50, and count by 50s:
50, 100, 150 , 200 , 250, 300 , 350




12, __, __, 112, __, __, 262
Start at 12, and approximate by counting 2 steps to reach close to 50, continue from there:
12, 62 , 112 , 162, 212 , 262




185, 235, __, __, __
Start at 185, and count by 50s:
185, 235, 285 , 335 , 385





In each case, we add the specified interval (10 or 50) to the previous number in the sequence to determine the next number. Be sure to follow the pattern that adds the given interval from one number to the next to correctly identify and fill in the missing numbers in the sequence.

Answered by ElijahBenjaminCarter | 2025-07-07