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# Addition and subtraction

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### Neighbor number

- Activity -

Practice consecutive numbers one less and one greater of a certain number.

### Number Bonds

- Activity -

Students learn how to partition numbers.

### Number Bonds to 10 or 20

- Activity -

Find the number to make 10 or 20.

### Number Line

- Activity -

Identifying and placing numbers.

### Number Line with Decimals

- Activity -

Identifying and placing numbers and/or decimals.

### Number Pieces

- Activity -

Numbers are explained and built using blocks to represent place value. Students develop a deeper understanding of mathematical concepts including addition, subtraction, number sense and counting.

### Numerical Expressions

- Activity -

Students learn how written phrases are interpreted as numeric expressions.

### One more or one less

- Activity -

Look at the items. Add one (or subtract one) and write down that number.

### Place Value - Digits up to hundreds

- Lesson plan -

Determine the value of a digit to hundreds. Model numbers using Base 10 Blocks.

### Place Value Chart: To Billions

- Activity -

Students learn the value of numbers. Ones up to a billion.

### Place Value Chart: To Ten Thousands

- Activity -

Students learn the value of numbers.

### Place Value Chart: With Decimal Numbers

- Activity -

Formatting numbers for decimals. Students will learn to understand the place value of every number.

### Seriation

- Activity -

Students learn to look at images that are in the right order.

### Snap Cubes

- Activity -

Use Snap Cubes to help reinforce counting, addition, patterning and more.

### Sum Machine

- Activity -

A machine to solve a variety of sums.

### Ten Frame

- Activity -

Develop counting and addition skills by using frames of 10.