❮
1
/
2
❯
Adding Three-digit Numbers Subtracting Three-digit Numbers Add the ones: Regroup: What is the total number of marbles? How many more marbles does Sue have than Mike? A B Ungroup: B 7 ones + 8 ones = 15 ones Subtract the ones: A 1 ten = 10 ones Ungroup: B Subtract the tens: A 1 hundred = 10 tens Subtract the hundreds: A 16 ones – 8 ones = 12 tens – 4 tens = Add the tens: A 1 ten + 4 tens + 7 tens = 12 tens Add the hundreds: A 1 hundred + 1 hundred + 2 hundreds = 4 hundreds 15 ones = Regroup: B 12 tens = Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 1 4 1 7 2 + 5 ones tens hundr eds 1 1 1 2 + 7 8 5 2 ones tens hundr eds 1 4 7 + 7 8 5 ones tens hundr eds 2 4 425 total number of marbles 1 2 16 3 4 4 2 8 ones tens hundr eds x xx x xx xx xx 3 16 4 2 6 8 8 ones tens hundr eds 12 2 16 3 4 6 8 8 8 1 ones tens hundr eds 12 278 Sue’s marbles 147 Mike’s marbles 7 8 4 7 1 2 6 8 2 3 4 8 xx hundreds – hundreds = 3 2 16 ones – 8 ones = 8 ones 12 tens – 4 tens = 8 tens hundreds – hundreds = hundred 3 2 1 3 4 2 © Copyright NewPath Learning. All Rights Reserved. 93-4301 www.newpathlearning.com Adding & Subtracting Three-digit Numbers 248 436 Mike’s marbles Sue’s marbles
Adding Three-digit Numbers Subtracting Three-digit Numbers Add the ones: Regroup: What is the total number of marbles? How many more marbles does Sue have than Mike? A B Ungroup: B 7 ones + 8 ones = 15 ones Subtract the ones: A 1 ten = 10 ones Ungroup: B Subtract the tens: A 1 hundred = 10 tens Subtract the hundreds: A 16 ones – 8 ones = 8 ones 12 tens – 4 tens = 8 tens Add the tens: A 1 ten + 4 tens + 7 tens = 12 tens Add the hundreds: A 1 hundred + 1 hundred + 2 hundreds = 4 hundreds 15 ones = 1 ten and 5 ones Regroup: B 12 tens = 1 hundred and 2 tens Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 4 1 7 2 + ones tens hundr eds 1 2 + 7 8 5 2 ones tens hundr eds 4 7 + 7 8 ones tens hundr eds 425 total number of marbles 2 16 3 4 4 2 8 ones tens hundr eds x xx x xx xx xx 3 16 4 2 6 8 8 ones tens hundr eds 2 16 3 4 6 8 ones tens hundr eds 278 Sue’s marbles 147 Mike’s marbles 7 8 4 7 1 2 6 8 2 3 4 8 xx hundreds – hundreds = hundred 3 2 1 3 4 2 Key Vocabulary Terms • add • ones • total • digit • regroup • ungroup • hundreds • subtract • more • tens © Copyright NewPath Learning. All Rights Reserved. 93-4301 www.newpathlearning.com Adding & Subtracting Three-digit Numbers 248 Mike’s marbles 436 Sue’s marbles \|xiBAHBDy01633lz[
NewPath Learning
About Us Our Team Awards & Endorsements Grants & Funding Product Suggestions Custom Publishing Collaborate Online Our BlogSolutions
Review & Reinforcement Intervention & Enrichment Test Prep After School/Summer School Parental Involvement Professional DevelopmentShop By Product
Curriculum Mastery Games Flip Charts Visual Learning Guides Curriculum Learning Modules E-Books/Workbooks Posters & Charts Study/Vocabulary Cards Digital Curriculum Online Learning Online Printable WorksheetsShop By Grade
Early Childhood First Grade Second Grade Third Grade Fourth Grade Fifth Grade Sixth Grade Seventh Grade Eighth Grade High School © 2021 NewPath Learning all right reserved | Privacy Statements | Term of use | Website design WinMix Soft
