Common Core State Standards

# Number & Operations in Base Ten

32 of 110 teaching resources for those 'aha' moments
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Practice adding four 2-digit numbers together with this set of 16 task cards.

7 pages Grades: 2 - 3
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Practice adding 2-digit numbers with this set of 18 number sentence task cards.

### Subtracting 2-Digit Numbers Task Cards

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

5 pages Grades: 2 - 3
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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
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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

### Save Santa's Workshop – Escape Room Activity

A fun and festive escape room activity where students solve clues to save Santa's Workshop.

26 pages Grades: 3 - 6

### What's Missing? - 100 More, 100 Less Task Cards

Find numbers 100 more or 100 less than a given number up to 4 digits with this set of 20 task cards.

7 pages Grades: 2 - 3

### 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

### 100 More , 100 Less Match-Up - Three-Digit Numbers

Match 3-digit number cards to find pairs that are 100 more or 100 less of each other.

13 pages Grades: 2 - 3

### Subtraction Algorithm PowerPoint Presentation

An engaging subtraction algorithm teaching presentation.

38 pages Grades: 2 - 4
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An animated teaching presentation focused on the addition algorithm.

23 pages Grades: 2 - 4

### Expanded Notation Puzzles - Whole Numbers

Practice whole number expanded notation with this 28-piece matching puzzle.

15 pages Grades: 3 - 4

### 2-Digit by 1-Digit Multiplication Worksheet

A worksheet for students to practice multiplying 2-digit numbers by 1-digit.

2 pages Grades: 3 - 4

### Owls Round, TOO - Match-Up Activity

Practice rounding through to the nearest hundred thousands place with our set of 36 whole number rounding match-up cards.

14 pages Grades: 3 - 4

### Multiplication Mouse – Worksheet

The multiplication mouse is scurrying in with three differentiated worksheets.

6 pages Grades: 3 - 5

### Grade 3 Daily Warm-Up – PowerPoint 4

A 61-slide PowerPoint presentation containing a variety of quick warm-up activities.

### Grade 3 Daily Warm-Up – PowerPoint 3

A 61-slide PowerPoint presentation containing a variety of quick warm-up activities.

### Grade 3 Daily Warm-Up – PowerPoint 2

A 64-slide PowerPoint presentation containing a variety of quick warm-up activities.

### Grade 3 Daily Warm-Up – PowerPoint 1

A 68-slide PowerPoint presentation containing a variety of quick warm-up activities.

### Subtraction Dog – Worksheet

A set of superb subtraction dog worksheets.

6 pages Grades: 1 - 3
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A set of differentiated addition worksheets.

6 pages Grades: 1 - 3

### Rounding to the Nearest 10 – Worksheet

A simple worksheet to assess students' understanding of rounding to the nearest ten.

2 pages Grades: 3 - 4

### Rounding to the Nearest 100 – Worksheet

A simple worksheet to assess students’ understanding of rounding to the nearest hundred.

2 pages Grades: 3 - 4

### Monster Multiplication Match-Up (2-digit by 1-digit)

A match-up activity to practice multiplying a 2-digit number by a 1-digit number.

### Addition and Subtraction Minute Math Booklet

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

14 pages Grades: 2 - 3
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A set of 15 match-up cards to scaffold work with addition word problems.

8 pages Grades: 2 - 3

### The Mathematical Easter Egg Hunt

A differentiated Easter egg hunt activity for mathematics.

11 pages Grades: 2 - 5

### Math Mazes - Addition and Subtraction

A set of puzzling mazes that require addition and subtraction skills to solve.

6 pages Grades: 2 - 3

### Math Mazes - Two-digit Addition

A set of three mazes that require students to add two-digit numbers.

6 pages Grades: 2 - 3

### Addition and Subtraction Work Mat

A work mat for students to use when working on addition and subtraction concepts.

1 page Grades: 1 - 3