2nd Grade Math: Addition and Subtraction
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Questions and Answers

Solve: 321 + 142 = ?

463

Solve: 754 - 432 = ?

322

Solve: 286 + 457 = ?

743

Solve: 801 - 500 = ?

<p>301</p> Signup and view all the answers

Solve: 648 + 295 = ?

<p>943</p> Signup and view all the answers

Sam has 265 marbles. His friend gives him 134 more. How many marbles does he have now?

<p>399 marbles</p> Signup and view all the answers

A farmer has 542 apples. He sells 319 apples at the market. How many apples does he have left?

<p>223 apples</p> Signup and view all the answers

Mia read 387 pages of a book. She still has 214 pages left to read. How many pages are in the book?

<p>601 pages</p> Signup and view all the answers

There are 826 stickers in a store. A customer buys 473 stickers. How many stickers are left in the store?

<p>353 stickers</p> Signup and view all the answers

Max has 345 stickers and buys 237 more. Should you add or subtract to find out how many he has now?

<p>Add (A)</p> Signup and view all the answers

A school has 684 students, and 215 move away. Should you add or subtract to find out how many are left?

<p>Subtract (A)</p> Signup and view all the answers

There were 129 birds in a tree and 75 more birds joined them. Should you add or subtract to find out how many are in the tree now?

<p>Add (A)</p> Signup and view all the answers

A bakery made 450 cupcakes and sold 289. Should you add or subtract to find out how many are left?

<p>Subtract (A)</p> Signup and view all the answers

Max had 506 toy cars. He lost 178 but then found 233 more. How many toy cars does Max have now?

<p>561 toy cars</p> Signup and view all the answers

In the regrouping process for 452 - 286, 4 hundreds 5 tens 2 ones minus 2 hundreds 8 tens 6 ones becomes ______ hundreds 15 tens 12 ones.

<p>3</p> Signup and view all the answers

In the regrouping process for 603 - 357, 6 hundreds 0 tens 3 ones minus 3 hundreds 5 tens 7 ones becomes 5 hundreds ______ tens 13 ones.

<p>10</p> Signup and view all the answers

In the regrouping process for 710 - 495, 7 hundreds 1 ten 0 ones minus 4 hundreds 9 tens 5 ones becomes 6 hundreds ______ tens 10 ones.

<p>11</p> Signup and view all the answers

After regrouping and subtracting, if you have 3 hundreds, 15 tens, and 12 ones, the final answer after combining these values is ______.

<p>166</p> Signup and view all the answers

After regrouping and subtracting, if you have 6 hundreds, 11 tens, and 10 ones, the final answer is ______.

<p>215</p> Signup and view all the answers

Flashcards

Addition

Combining two or more numbers to find their total.

Subtraction

Taking away a number from another to find the difference.

Regrouping

A strategy in addition or subtraction where you exchange amounts from one place value to another.

Sum

The answer you get after adding two or more numbers together.

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Difference

The answer you get after subtracting one number from another.

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Place Value

The value of a digit based on its position in a number.

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Aligning Numbers

Lining up numbers by their place values (ones, tens, hundreds) before adding or subtracting.

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Borrowing in Subtraction

When the digit you are subtracting is larger than the digit you are subtracting from, borrow from the next place value

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Combining

Combine smaller groups into a bigger group and counting how many in total

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Taking away

Taking some things away.

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Total

Total of something

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How Many Now?

How many apples does he has now?

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How Many Left?

How many students remain at the school?

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Problem solving skills

Word problem

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Breaking Down Numbers

Breaking down bigger numbers into parts to make math easier

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Equation

Math problem in written

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Answer

The final number in the problem

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Solve

Finding the solution to a problem

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Key Word

Reading and understanding the question

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Bonus Question

Bonus question for getting extra points

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Solving

To calculate by using specific ways

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Add Key Words

Word that tells you to add

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Subtract Key Words

Word that tells you to subtract

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Show Your Work

Writing out math problems

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Plus Sign

Used to indicate addition

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Minus Sign

Used to indicate subtraction

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Addends

The numbers being added together

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Subtrahend

The number being subtracted.

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Minuend

The number you subtract from.

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Estimate

An educated guess

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Expanded Form (Subtraction)

Breaking down numbers into hundreds, tens, and ones to prepare for regrouping.

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Regrouping in Expanded Form

Adjusting place values to subtract when the top digit is smaller.

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Adjusted Hundreds

The hundreds place after regrouping ones and tens.

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Adjusted Tens

The tens place after regrouping from hundreds.

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Adjusted Ones

The ones place after regrouping.

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Study Notes

  • This is a second-grade math study guide focusing on addition and subtraction.

Addition and Subtraction Problems

  • Solve the following problems by rewriting and lining up the numbers:
  • 321 + 142 = ?
  • 754 - 432 = ?
  • 286 + 457 = ?
  • 529 + 374 = ?
  • 801 - 500 = ?
  • 648 + 295 = ?
  • 725 - 468 = ?
  • 387 + 469 = ?
  • 900 - 645 = ?
  • 741 + 289 = ?

Regrouping Practice

  • Follow the example to solve the problems step by step.
  • Example: 241 - 173

How to Regroup

  • Break down the numbers into hundreds, tens, and ones to solve the problem:
  • 4 hundreds 5 tens 2 ones - 2 hundreds 8 tens 6 ones = ?
  • 603 - 357 = ?
  • 6 hundreds 0 tens 3 ones - 3 hundreds 5 tens 7 ones = ?
  • 710 - 495 = ?
  • 7 hundreds 1 ten 0 ones - 4 hundreds 9 tens 5 ones = ?

Word Problems

  • Show your work to solve these word problems:
  • Sam has 265 marbles, and his friend gives him 134 more. The equation and answer should calculate the total marbles.
  • A farmer has 542 apples and sells 319. The equation and answer should calculate the remaining apples.
  • Mia read 387 pages and has 214 pages left. The equation and answer should calculate the total pages in the book.
  • There are 826 stickers in a store, and a customer buys 473. The equation and answer should calculate the remaining stickers.

Key Words

  • Key words can suggest whether to add or subtract.
  • Max has 345 stickers and buys 237 more. Determine whether to add or subtract.
  • A school has 684 students, and 215 move away. Determine whether to add or subtract.
  • There were 129 birds in a tree, and 75 more joined them. Determine whether to add or subtract.
  • A bakery made 450 cupcakes and sold 289. Determine whether to add or subtract.

Key Words Bonus

  • Identify one key word that helped you decide for each problem.

Challenge Question

  • This problem requires careful thinking: Max had 506 cars, lost 178, and found 233 more. The equation and answer should calculate the total toy cars.

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Related Documents

Second Grade Math PDF - Addition & Subtraction Practice

Description

This study guide focuses on addition and subtraction problems for second-grade students. It includes practice with regrouping, solving equations, and tackling word problems. Students will learn to rewrite and align numbers to solve problems.

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