Stepping Stone Arithmetic Mathematics Elementary 4A

Description

This textbook was published to reflect the 2024nd revised curriculum that will be newly revised starting in 22.

1. Solving 100 problems with your head improves your math skills rather than solving 10 problems with your hands.
Learning calculation methods alone can develop 'calculation skills', but it does not lead to 'mathematics skills'.
Just as calculations have principles and methods, calculations have their own properties and relationships between calculations. Additionally, children must be able to use calculations and develop number sense through calculations. In this way, to enable three-dimensional calculation training rather than just a cross-section of calculations, problems that allow one to consider one calculation from various angles were created based on mathematical design.

2. To master elementary, middle, and high school math, you need to do math-based operations, not the four basic arithmetic operations.
Because mathematics is a subject that is connected to elementary, middle, and high school, the formation of concepts in elementary school also affects middle and high school learning. It is easy to take lightly the concepts learned in elementary school, but since they are connected to important concepts in middle and high school, it is essential to learn calculations that can point out their mathematical meaning.
In addition, the laws of mathematics learned in middle and high school must be experienced from the elementary school level, so that it can become the center of overall mathematics learning.

3. Math concepts remain only when you think, solve, and feel.
Calculations that only calculate from beginning to end not only bore children, but also make them bored.
You miss the mathematical meaning behind the calculations. We created a three-dimensional learning structure so that calculation training can be linked to understanding mathematical concepts by helping students understand what mathematical principles are based on it and what calculation methods are used accordingly. In addition, we have separately organized why the mathematical concepts contained in the problems are important and how they relate to middle and high school learning and included them in the correct answers.

1. (Three digits)×(Two digits)
2. (four digits)×(two digits)
3. Multiply by (hundreds), (thousands)
4. Multiplication synthesis
5. Divide by tens
6. (two digit number)÷(two digit number)
7. If the quotient is a one-digit number (three-digit number) ÷ (two-digit number)
8. If the quotient is a two-digit number, (three-digit number)÷(two-digit number)