Instant Check System • Diagnosing Readiness, 2 • Warm Up, daily • Talk About It, daily • Check, daily • Diagnostic Checkpoint,   21, 35, 47  Test Prep  • Mixed Review and    Test Prep, daily • Test Talk, daily, 48 • Cumulative Review and    Test Prep, 54 • Reading Helps, 18, 32, 42 • Key Vocabulary and   Concept Review, 50 • Writing in Math   exercises, daily   Problem-Solving   Applications, 44   Discover Math   in Your World, 31  Additional Resources  • Learning with    Technology, 11 • Practice Game, 25 • Enrichment, 17 • Chapter 1 Test, 52 • Reteaching, 56 • More Practice, 60  Place Value, Adding, and Subtracting Test-Taking Strategies xv Diagnosing Readiness 2 Place Value: Whole Numbers and Decimals 1-1 Place Value Through Billions 4 1-2 Comparing and Ordering Whole Numbers 6 1-3 Place Value Through Thousandths 8 1-4 Comparing and Ordering Decimals 12 1-5 Place-Value Patterns 14 1-6 Read and Understand 18 Section A Review 20 Section A Diagnostic Checkpoint 21 Building Number Sense 1-7 Adding and Subtracting Mentally 22 1-8 Rounding Whole Numbers and Decimals 26 1-9 Estimating Sums and Differences 28 1-10 Plan and Solve   32 Section B Review 34 Section B Diagnostic Checkpoint 35 Adding and Subtracting 1-11 Adding and Subtracting Whole Numbers 36 1-12 Adding Decimals 38 1-13 Subtracting Decimals 40 1-14 Look Back and Check 42 1-15 Cruise Ships 44 Section C Review 46 Section C Diagnostic Checkpoint 47