Тема: Додавання та віднімання десяткових дробів. Одиниці вимірювання довжини в Америці. Переведення дюймів в сантиметри
Основна частина.
1. Revision time table (1, 2, 3, 4, 5, 6, 7, 8). Watching the video and singing the song “Time table – 2 and 3” (7 times 7…)
2. Theory
Inches to Centimeters Conversion
How many centimeters in an inch?
The conversion factor from inches to centimeters is 2.54. To find out how many centimeters in inches, multiply by the conversion factor or use the converter below.
1 Inch = 2.54 Centimeters
Inch is a unit of length in imperial and U.S. customary systems. It's been used since 7th century and means "one twelfth" of something in latin, in this case it's the 1/12 of another length unit, foot. After the metric system is accepted globally (except a few countries), it's replaced with centimeter but still commonly used in united states, britain and canada. The abbreviation is "in" and also the symbol is a double prime (").
Centimeter is a metric system length unit. It equals to one hundredth (1/100) of a meter which is the metric system base length unit. It's one of the the most common length units for everyday measurements. The abbreviation is "cm".
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