Description: Faster and Stronger: This Is Calculation D1 Volume D1: Large Numbers / (Three-digit numbers) ÷ (Two-digit numbers) Unit 1: Large Numbers (1) Unit 2: Large Numbers (2) Unit 3: Dividing by Multiples of Ten Unit 4: Dividing by Two-digit Numbers Answers and Explanations Faster and Stronger: This Is Calculation D2 Volume D2: Addition and Subtraction of Fractions with the Same Denominator Unit 1: Addition of Fractions with the Same Denominator Unit 2: Subtraction of Fractions with the Same Denominator Unit 3: (Whole Number) - (Fraction) Unit 4: Subtraction of Mixed Numbers with the Same Denominator Answers and Explanations Faster and Stronger: This Is Calculation D3 Volume D3: Mixed Calculations with Whole Numbers Unit 1: Mixed Addition and Subtraction, Multiplication and Division Unit 2: Mixed Addition, Subtraction, and Multiplication or Addition, Subtraction, and Division Unit 3: Mixed Addition, Subtraction, Multiplication, and Division Unit 4: Mixed Calculations with Parentheses Answers and Explanations Faster and Stronger: This Is Calculation D4 Volume D4: Addition and Subtraction of Decimals Unit 1: Two-digit and Three-digit Decimal Numbers Unit 2: Relationships Between Decimals and Comparing Sizes Unit 3: Addition of Decimals Unit 4: Subtraction of Decimals Answers and Explanations