1 / 30

PARTIAL SUMS ADDITION

PARTIAL SUMS ADDITION. THINK HOW MANY PARTS?? (The largest number has 3 digits so there will be 3 parts.). 483 +265. WORK LEFT TO RIGHT…ADD THE COLUMNS. PARTIAL SUMS ADDITION. THINK HOW MANY PARTS?? (The largest number has 3 digits so there will be 3 parts.). 483

kennan
Download Presentation

PARTIAL SUMS ADDITION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PARTIAL SUMS ADDITION THINK HOW MANY PARTS?? (The largest number has 3 digits so there will be 3 parts.) 483 +265 WORK LEFT TO RIGHT…ADD THE COLUMNS

  2. PARTIAL SUMS ADDITION THINK HOW MANY PARTS?? (The largest number has 3 digits so there will be 3 parts.) 483 +265 WORK LEFT TO RIGHT…ADD THE COLUMNS STEP1: ADD 400….4 8 3 +200….2 6 5 6 0 0

  3. PARTIAL SUMS ADDITION THINK HOW MANY PARTS?? (The largest number has 3 digits so there will be 3 parts.) 483 +265 WORK LEFT TO RIGHT…ADD THE COLUMNS STEP 1: ADD 400….4 8 3 +200….2 6 5 6 0 0 STEP 2: ADD 80….4 8 3 +60….2 6 5 6 0 0 1 4 0

  4. PARTIAL SUMS ADDITION THINK HOW MANY PARTS?? (The largest number has 3 digits so there will be 3 parts.) 483 +265 WORK LEFT TO RIGHT…ADD THE COLUMNS STEP 1: ADD 400….4 8 3 +200….2 6 5 6 0 0 STEP 2: ADD 80….4 8 3 +60….2 6 5 6 0 0 1 4 0 STEP 3: ADD 3….4 8 3 +5….2 6 5 6 0 0 1 4 0 8

  5. PARTIAL SUMS ADDITION THINK HOW MANY PARTS?? (The largest number has 3 digits so there will be 3 parts.) 483 +265 WORK LEFT TO RIGHT…ADD THE COLUMNS FINAL STEP: ADD 4 8 3 + 2 6 5 6 0 0 1 4 0 8 7 4 8 STEP 1: ADD 400….4 8 3 +200….2 6 5 6 0 0 STEP 2: ADD 80….4 8 3 +60….2 6 5 6 0 0 1 4 0 STEP 3: ADD 3….4 8 3 +5….2 6 5 6 0 0 1 4 0 8

  6. TRADE-FIRST SUBTRACTION THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) WORK LEFT TO RIGHT…TRADE 463 - 278 STEP 1: TRADE? 4 6 3 - 2 7 8 Can you remove 2 hundreds from 4 hundreds? YES!

  7. TRADE-FIRST SUBTRACTION THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) WORK LEFT TO RIGHT…TRADE 463 - 278 STEP 2: TRADE? 3 16 4 6 3 - 2 7 8 STEP 1: TRADE? 4 6 3 - 2 78 Can you take 7 tens from 6 tens? NO! TRADE! Can you take 2 hundreds from 4 hundreds? YES!

  8. TRADE-FIRST SUBTRACTION THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) WORK LEFT TO RIGHT…TRADE 463 - 278 STEP 3: TRADE? 15 3 16 13 4 6 3 -2 7 8 STEP 2: TRADE? 3 16 4 6 3 - 2 7 8 STEP 1: TRADE? 4 6 3 - 2 78 Can you take 7 tens from 6 tens? NO! TRADE! Can you take 8 from 3? NO! TRADE! Can you take 2 hundreds from 4 hundreds? YES!

  9. TRADE-FIRST SUBTRACTION THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) WORK LEFT TO RIGHT…TRADE 463 - 278 STEP 3: TRADE? 15 3 16 13 4 6 3 -2 7 8 STEP 2: TRADE? 3 16 4 6 3 - 2 7 8 STEP 1: TRADE? 4 6 3 - 2 78 STEP 4: SUBTRACT 15 3 16 13 4 6 3 - 2 7 8 1 8 5 Can you take 7 tens from 6 tens? NO! TRADE! Can you take 8 from 3? NO! TRADE! Can you take 2 hundreds from 4 hundreds? YES!

More Related