Multi-Digit Addition with Visual Manipulatives

Grade 6 Mathematics Using Base-Ten Blocks and Place Value 30-Minute Lesson

Our Learning Goals Today

Grade 6 Mathematics Using Base-Ten Blocks and Place Value 30-Minute Lesson

Warm-Up: Building Number Sense

Add these one-digit numbers together: 7 + 5 Use your fingers to show the addition Think about how we combine groups Connect this to bigger numbers we'll learn

Place Value Columns: The Foundation

Step-by-Step Addition with Blocks

Example: 234 + 159 Step 1: Line up by place value Step 2: Add ones column first (4 + 9 = 13) Step 3: Regroup 13 as 1 ten and 3 ones Step 4: Add tens column (3 + 5 + 1 = 9) Step 5: Add hundreds column (2 + 1 = 3)

Understanding Regrouping (Carrying)

{"left":"When we have 10 or more in any column, we regroup\n10 ones = 1 ten\n10 tens = 1 hundred","right":"Move the extra to the next column\nThis is called 'carrying over'\nIt helps keep our place values organized"}

Your Turn to Practice!

Problem 1: 346 + 127 Problem 2: 578 + 263 Use your whiteboard and blocks Work with a partner if needed Remember to line up place values Show your work step by step

Let's Reflect and Share

Can you explain the steps you used to solve one problem? What was the most important thing to remember? How did the blocks help you understand? What would you tell a friend about multi-digit addition?