Page 2: Advanced Mental Arithmetic Techniques
This page delves deeper into rachunki pamięciowe na liczbach naturalnych i ułamkach dziesiętnych mentalarithmeticwithnaturalnumbersanddecimalfractions, focusing on multiplication and division by powers of 10, as well as addition and subtraction of decimals.
Example: 37.5 × 10 = 375
Example: 37.5 ÷ 10 = 3.75
The page illustrates how multiplying or dividing by powers of 10 shifts the decimal point, making these calculations easy to perform mentally.
Vocabulary: Dodawanie i odejmowanie ułamków dziesiętnych w pamięci refers to the mental addition and subtraction of decimal fractions.
Several examples of decimal addition and subtraction are provided, demonstrating techniques for aligning decimal points and carrying out these operations mentally.
Highlight: The examples progress in difficulty, challenging students to perform more complex mental calculations with decimals.