Math Unit 1 Lesson 1 Math_Unit1_Lesson1 [Read-Only].pptx

Unit 1 Lesson PPTX

1. Lesson 1: Place Value Review Essential Question: How does understanding place value help us work with large numbers?

2. Vocabulary Key terms: - Place Value Place Value Definition-Place value is the value of a digit based on its position within a number. In our base-ten system, each place is ten times greater than the place to its right. For instance, in the number 345, the digit 3 has a place value of 300, the 4 has a value of 40, and the 5 has a value of 5. This system allows us to represent and comprehend large quantities efficiently. - Base-Ten System Base Ten System Definition-The base-ten system (or decimal system) is the numerical system we use, which is built on the number 10. This means it uses ten unique digits (0-9) to create all numbers. The concept of "base ten" is why we group numbers into sets of tens, hundreds, thousands, and so on. Every position in a number represents a power of 10, which is the underlying pattern of our number system. -Digit Digit Definition-A digit is any single numerical symbol used to represent a number. In the base-ten system, the digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. A number can be made up of one or more digits. For example, the number 7 is a single digit, while the number 72 is made of two digits: 7 and 2. The word "digit" comes from the Latin word for finger, reflecting the historical use of fingers for counting.

3. Key Notes Important points about this lesson’s topic. - Explanation 1 - Explanation 2

4. Worked Example Example problem: Solve 456 + 789 = ? Step 1... Step 2...

5. Guided Practice Work through these problems together: 1) 234 + 567 2) 912 - 456

6. Independent Practice Try these on your own: 1) 345 × 6 2) 128 ÷ 4

7. Exit Ticket Answer before leaving: 1) Solve 250 + 375 2) Explain why place value matters.