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The weight | 0,132 kg |
Size | 130 × 200 mm |
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€4,99
Not available
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Do you know how to multiply or divide by 25 without using a calculator? How do you multiply multi-digit numbers in your head? Can you quickly solve a long example? Can you find approximate roots of decimals? The book in front of you will help you learn this and more. With its help, you will master the basic principles of convenient oral and written counting. It lists all the necessary rules for multiplying and dividing multi-digit numbers, fractions and decimals, as well as square roots and percentage problems. After learning all the tricks, you will understand how to speed up the simplest calculations that you face on a daily basis: calculating a budget or shopping in a store. The book is written in an accessible language and does not require special knowledge. All examples are analyzed in detail, but for greater efficiency it is recommended to solve them yourself.
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Publishing house | |
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The weight | 0,132 kg |
Size | 130 × 200 mm |
Format | |
The year of publishing |
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