SECTION 1
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Lesson 1.1: Digit Sums
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Part 2: Computing Digit Sums
1) 2 2) 5 3) 3 4) 3 5) 1 6) 2 7) 1 8) 5 9) 7 10) 4
Part 4: Casting Out the 9′s
1) 3 2) 1 3) 0 or 9 4) 2 5) 7 6) 1 7) 5 8) 3 9) 4 10) 8
Lesson 1.5: Multiplication
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Part 2: Two-Digit Multiplication
1) 180 2) 255 3) 594 4) 672 5) 585 6) 1152 7) 3233 8) 5372 9) 8372 10) 9603
SECTION 2
[...] PROBLEMS 1. 29 2. 32 3. 57 4. 354 5. 271 6. 10253 7. 27361 8. 56381 9. 1029301 10. 1425361 Answers to Practice Problems. Possibly related posts: (automatically generated)Series differences, and fascinating factsPuzzle – [...]
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