Number Talk: Adding and Subtracting Within 1000 by Erick Gutierrez

Main Objective

ejuniorg7 — 2024-05-24 21:31:42 UTC

Develop the skill to add and subtract within 1000 using different strategies based properties of operations, place values, and the relationship between subtraction and addition.

Outline

ejuniorg7 — 2024-05-24 22:30:23 UTC

Present the math problem
Student discussion (solve the problem)
Explain the strategy used
Class discussion
Reflection

Math Problem

ejuniorg7 — 2024-05-24 23:24:12 UTC

725 + 348

Math Strategy- Break Apart Strategy

ejuniorg7 — 2024-05-26 00:07:42 UTC

This strategy involves identifying numbers, breaking them down, adding/subtracting by the place values, then combining the values together.

Step 1- Identifying numbers (and operation)

ejuniorg7 — 2024-05-26 00:09:21 UTC

725 + 348 is an addition problem.

Step 2: Breaking Down Numbers

ejuniorg7 — 2024-05-26 00:13:52 UTC

Separate 725 and 348 into component parts based on their place values

725--> 700 + 20 + 5

348--> 300 + 40 + 8

Step 3: Using the Addition Operation

ejuniorg7 — 2024-05-26 00:17:45 UTC

Add the numbers by their corresponding value place

Hundreds: 700 + 300 = 1,000

Tens: 20 + 40 = 60

Ones: 5 + 8 = 13

Step 4: Combining All Value Sums

ejuniorg7 — 2024-05-26 00:19:47 UTC

Complete the problem by combining all the value sums from this problem for the final value

1,000 + 60 + 13 = 1,613