Underline the digit in the ten thousands place:
25 000107 068 40 680 12 327 349 789 376
Underline the digit in the hundred thousands place:
32 335 378 1 005 256.89 $277 256.63 $3 006 126.98
Underline the digit in the millions place:
8 176 365459 607 793 259 259 259 10 026 746
Start with the first number, double it, double again; double at least seven times:
50
7
11
Add 10 to each of these numbers:
123547 2 229 383 27 19
Subtract 10 from each of these numbers:
123547 2 229 383 27 19
Add 100 to each of these numbers:
245367 28 4 567 1 789 798
Subtract 100 from each of these numbers:
245367 28 4 567 1 789 798