Chinese numbers (数字) are used for various topics including slang and daily life. Numbers 0-10 form building blocks for numbers 11 and beyond. Numbers 11-20 use basic addition with numbers 1-9. Numbers 21-99 follow multiplication pattern: 2-9 + 十 + 1-9. Numbers 100-999 use 百 (bǎi) after numbers 1-9
One foot equals 30.48 centimeters. Conversion formula: centimeters = feet × 30.48. Example: 5 feet equals 152.4 centimeters
1 ton equals 907.18474 kilograms. Conversion formula: kilograms = tons × 907.18474
1 centimeter equals 0.393701 inches. Conversion formula: inches = centimeters ÷ 2.54. Example: 5 cm converts to 1.968504 inches
1 hectare equals 10,000 square meters. Conversion formula: square meters = hectares × 10,000
1 kilogram equals 0.001102 tons. Conversion formula: tons = kilograms × 0.001102