Spelling, Writing and Reading Numbers

Warm-up activity What is estimation? What makes a good estimation?

How many cough drops come in the bag? What’s an estimate that’s way too high? What’s an estimate that’s way too low? What’s an accurate estimate? 80 drops ANSWER:

Writing Numbers Do your best to fill in the handout

Handout Answers

Reading Whole Numbers Ex: 123,456,789 1. Break the number into groups of 3 place values (start from right to left) 123 is millions, 456 is thousands and 789 is in standard place values 123-million, 456 – thousand, 789 (drop the standard) 2. Read/write it as: one hundred twenty-three million four hundred fifty six thousand seven hundred eighty nine Hundred millions Ten millions millions Hundred thousands Ten thousands thousands hundreds tens ones 1 2 3, 4 5 6, 7 8 9

Practice Complete the worksheets Check your answers when you’re done Ask for help if you’re stuck 