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(The largest number has 3 digits so there will be 3 parts.)
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
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(The largest number has 3 digits so there will be 3 parts.)
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
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(The largest number has 3 digits so there will be 3 parts.)
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
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(The largest number has 3 digits so there will be 3 parts.)
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
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(The largest number has 3 digits so there will be 3 parts.)
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 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
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TRADE-FIRST SUBTRACTION
THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) 463 - 278 WORK LEFT TO RIGHT…TRADE STEP 1: TRADE? 4 6 3 Can you remove 2 hundreds from 4 hundreds? YES!
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TRADE-FIRST SUBTRACTION
THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) 463 - 278 WORK LEFT TO RIGHT…TRADE STEP 2: TRADE? 3 16 4 6 3 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!
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TRADE-FIRST SUBTRACTION
THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) 463 - 278 WORK LEFT TO RIGHT…TRADE STEP 2: TRADE? 3 16 4 6 3 STEP 3: TRADE? 15 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!
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TRADE-FIRST SUBTRACTION
THINK HOW MANY STEPS BEFORE YOU SUBTRACT? (The largest number has 3 digits so there will be 3 steps.) 463 - 278 WORK LEFT TO RIGHT…TRADE STEP 2: TRADE? 3 16 4 6 3 STEP 3: TRADE? 15 4 6 3 -2 7 8 STEP 1: TRADE? 4 6 3 - 2 78 STEP 4: SUBTRACT 15 4 6 3 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!
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