1. How do you write a number in words? The grasshopper hopped 49 times. But wait! I want to write that number in a story.

2. In this lesson you will learn how to read numbers by writing numbers as words.

3. Let’s Review 15 standard form Numbers can be written in standard form, expanded form, and word form. 10 +5 1 ten and 5 ones expanded form fifteen word form

4. When you read a number you read from left to right – just like reading words. 52 fifty-two 15 fifteen (5 + 10) 79 seventy-nine

5. Core Lesson Two types of numbers are tricky to write. 13, 14, 15… fifteen teen stands for 10 so 15 = 5 + 10 TeensTens 20, 30, 40,50… twenty ty stands for 10’s so 20 = 2 tens

6. A model can help us decide how to write a number as words. 725 seven hundred twenty-five 700 205

7. 518 five hundred 500 10 8 We write the words for each part of the number. + = 18 eighteen

8. A Common Misunderstanding Thinking that 705 is written as seven hundred zero five. 705 We write seven hundred five 700 5

9. Core Lesson So how do I write 49 hops as words? The grasshopper hopped forty-nine times. 40 9

10. In this lesson you have learned how to read numbers by writing numbers as words