A billion equals 1,000,000,000 in numbers. One million is 0.001 billion. To convert, divide by 1000 for million to billion. To convert, multiply by 1000 for billion to million
English verbs don't follow simple "ed" rule for past tense. Learning irregular verbs requires practice and memory. Article presents 20 most used irregular verbs with examples
Expresses time required for completing tasks. Can indicate both estimated and exact time requirements. Used with specific people: "It takes Jill an hour to get ready"
Perimeter refers to the total distance around a two-dimensional shape. Perimeter formula: P = (L + W) × 2. Perimeter calculations are used for fencing, picture frames, and window dimensions
IELTS speaking test consists of introduction, cue card round, and follow-up questions. Total speaking time is 11-15 minutes. Part 2 requires describing best friend in 2 minutes with 1 minute planning
Used for specific hours and meal times. Can indicate fixed expressions like "at that time"