Description: Learning calculation methods alone can build 'calculation skills,' but it doesn't necessarily lead to true 'math ability.' Just as calculations have their own principles and methods, each type of calculation has its own characteristics and relationships with other calculations. Children also need to be able to apply calculations in practical ways and develop number sense through them. With this in mind, this book is designed—based on sound mathematical principles—to help children think about a single calculation from multiple angles, allowing for well-rounded, three-dimensional calculation practice rather than one-sided drills. 1. (Three-digit number) × (One-digit number) without carrying 2. (Three-digit number) × (One-digit number) with one carry 3. (Three-digit number) × (One-digit number) with two carries 4. (Two-digit number) × (Two-digit number) 5. Division with remainders 6. (Multiples of ten) ÷ (One-digit number), (Hundreds and tens) ÷ (One-digit number) 7. (Two-digit number) ÷ (One-digit number) without regrouping 8. (Two-digit number) ÷ (One-digit number) with regrouping 9. (Two-digit number) ÷ (One-digit number) with remainders 10. (Three-digit number) ÷ (One-digit number) without remainders 11. (Three-digit number) ÷ (One-digit number) with remainders 12. Fractions