Teks

# Math 2.4

Number and operations. The student applies mathematical process standards to develop and use strategies and methods for whole number computations in order to solve addition and subtraction problems with efficiency and accuracy. The student is expected to:

• (1) recall basic facts to add and subtract within 20 with automaticity;
• (A) add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations;
• (B) solve one-step and multi-step word problems involving addition and subtraction within 1,000 using a variety of strategies based on place value, including algorithms; and
• (C) generate and solve problem situations for a given mathematical number sentence involving addition and subtraction of whole numbers within 1,000.

32 of 185 teaching resources for those 'aha' moments

### Cover Up! - Addition Facts Game

Develop a love of addition facts with this multiplayer Valentine’s Day board game.

1 page Grades: 1 - 2

### Double Dinos - Using Doubles Facts to Add Near Doubles Worksheet

Practice the “near doubles” addition strategy to solve addition problems to 20.

Grades: 1 - 2

### Adding Four 2-Digit Numbers Task Cards

Practice adding four 2-digit numbers together with this set of 16 task cards.

7 pages Grades: 2 - 3

### 2-digit + 1-digit Task Cards

Practice adding 2-digit and 1-digit numbers with this set of 18 number sentence task cards.

5 pages Grades: 1 - 2
• #### teaching resource

Practice adding 2-digit numbers with this set of 18 number sentence task cards.

Grades: 2 - 3

### Multi-Step Problem Solving Worksheet

Solve a multi-step problem and explain the mathematical reasoning behind the process with this simple worksheet.

2 pages Grades: 2 - 3

### Subtracting 2-Digit Numbers Task Cards

Practice 2-digit subtraction with this set of 18 task cards.

5 pages Grades: 2 - 3

### 2-Digit + 1-Digit Numbers Addition Worksheet

Practice addition involving 2- and 1-digit numbers with this drill and practice worksheet.

2 pages Grades: 1 - 2

### Addition and Subtraction Problem Solving Task Cards

Practice solving 1- and 2-step word problems by adding and subtracting 2-digit numbers with this set of 16 task cards.

6 pages Grades: 2 - 3

### Subtraction Strategies Using Addition Worksheet

Use addition to solve subtraction problems with this worksheet.

2 pages Grades: 1 - 2

### Adding 2-Digit Numbers Worksheet

Practice 2-digit addition with regrouping with this drill and practice worksheet.

2 pages Grades: 2 - 3

### Subtracting 2-Digit Numbers Worksheet

Practice 2-digit subtraction with regrouping with this drill and practice worksheet.

2 pages Grades: 2 - 3

### Word Problem Task Cards - 2-digit + 1-digit Addition

Practice adding 2-digit and 1-digit numbers with this set of 16 word problem task cards.

6 pages Grades: 1 - 2

### Missing Addend Picture Puzzle – Level 3

Solve the missing addition sentence by matching the addend with its equation, completing the puzzle.

3 pages Grades: 2 - 3

### Missing Addend Picture Puzzle – Level 2

Solve the missing addition sentence by matching the addend with its equation, completing the puzzle.

3 pages Grades: 2 - 3

### Missing Addend Picture Puzzle – Level 1

Solve the missing addition sentence by matching the addend with its equation, completing the puzzle.

3 pages Grades: 1 - 2

### Addition to 10 Modeling Mats

Familiarize students with adding single-digit numbers using this set of practice mats.

4 pages Grades: K - 2

### Addition Strategy - Decompose, Then Make 10 Worksheet

Build addition strategies using digits 1-10 with this two-page decomposing numbers worksheet.

4 pages Grades: 1 - 2

### Addition Strategy - Counting On Worksheet

Solve addition problems in this 2-page Counting On Addition Worksheet.

4 pages Grades: 1 - 2

### Subtraction Algorithm PowerPoint Presentation

An engaging subtraction algorithm teaching presentation.

38 pages Grades: 2 - 4

### Addition Algorithm PowerPoint Presentation

An animated teaching presentation focused on the addition algorithm.

23 pages Grades: 2 - 4

### Decorate a Pumpkin - Halloween Game

Practice finding sums up to 12 with this fun Halloween pumpkin game!

2 pages Grades: 1 - 3

### Fact Family Find and Flip - Addition and Subtraction Up to 20

Addition and subtraction game cards demonstrating the relationship between fact families.

1 page Grades: 1 - 2

### Ten is a Match! - Memory-Style Game

Practice matching two numbers that add up to 10 with this set of 24 number cards.

9 pages Grades: K - 2

### Making Ten Cut and Paste Worksheet

A cut and paste worksheet to practice finding the missing addend when making ten.

3 pages Grades: K - 2

### Subtraction Dog – Worksheet

A set of superb subtraction dog worksheets.

6 pages Grades: 1 - 3

### Addition Worm – Worksheet

A set of differentiated addition worksheets.

6 pages Grades: 1 - 3

### Math Mazes – Making Ten

A set of mazes where students find missing addends to solve the maze.

6 pages Grades: 1 - 2

### Addition and Subtraction Minute Math Booklet

A math warm-up booklet with ten pages of addition and subtraction questions.

14 pages Grades: 2 - 3

### Addition Match-Up Puzzles

A set of 15 match-up cards to scaffold work with addition word problems.

8 pages Grades: 2 - 3

### Add and Reveal PowerPoint – Addition Practice

A PowerPoint for students to interact with when practicing addition facts.

6 pages Grades: 1 - 2

### The Mathematical Easter Egg Hunt

A differentiated Easter egg hunt activity for mathematics.

11 pages Grades: 2 - 5