Common Core State Standards

# CCSS.MATH.CONTENT.2.NBT.B.8

Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.

27 teaching resources for those 'aha' moments

### 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

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

Find numbers ten more or ten less than a given two- or three-digit number with this set of 20 task cards.

7 pages Grades: 1 - 2

### 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

### Ten More, Ten Less Match-Up - Two-Digit Numbers

Identify ten more or ten less of a given 2-digit number with this set of 36 match up cards

13 pages Grades: 1 - 2

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

Identify ten more or ten less of a given 3-digit number with this set of 36 match up cards.

### Ten More, Ten Less Worksheet

Practice or review adding and subtracting 10 from a given number.

4 pages Grades: 1 - 2

### One Hundred More, One Hundred Less Within 999 - Cut and Paste Worksheet

Add and subtract 100 from a given three-digit number in this cut-and-paste worksheet.

### More and Less Worksheet

Practice adding and subtracting 10 and 100 to a three-digit number.

### Ten More, Ten Less Within 999 - Cut and Paste Worksheet

Practice adding and subtracting 10 from a given 3-digit number in this cut-and-paste worksheet.

### Ten More, Ten Less Task Cards

Practice identifying 10 more and 10 less than a given number with our set of 24 task cards.

8 pages Grades: 1 - 2

### Ten More, Ten Less Dominoes

Practice adding ten more or subtracting ten from a particular number with a set of 27 dominoes.

6 pages Grades: 1 - 2

### Roll and Color Worksheet - Ten More, Ten Less

An interactive worksheet to practice finding the number that is 10 more and 10 less than a given number.

2 pages Grades: 1 - 2

### Place Value Work Mat

A work mat for students to use when working on place value concepts.

1 page Grades: 1 - 5

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

A 73-slide PowerPoint presentation containing a variety of quick warm-up activities.

### Number Talks - Place Value Task Cards

Build number sense skills with this set of 24 task cards.

24 pages Grades: 1 - 4

### Black and White Number Chart 1–120

A black and white number chart showing the numbers 1-120.

1 page Grades: K - 3

### Dot-to-Dot Drawing - Counting by 10 - Shark

A dot-to-dot worksheet to practice counting by 10’s to 580.

2 pages Grades: 2 - 3

### Dot-to-Dot Drawing - Counting by 10 - Rocket

A dot-to-dot worksheet to practice counting by 10’s to 330.

2 pages Grades: 2 - 3

### Dot-to-Dot Drawing - Numbers by 10 - Dog

A dot-to-dot worksheet to practice counting to 600 by 10’s.

2 pages Grades: 2 - 3

### Dot-to-Dot Drawing - Counting by 10 - Horse

A dot-to-dot worksheet to practice counting by 10’s to 620.

1 page Grades: 2 - 3

### Math Work Mats

A set of 5 work mats for students to use when working on specific math concepts.

5 pages Grades: 1 - 5

### Black and White Number Board - 1-120

A black and white number board with numbers 1-120 that can be used for a variety of activities.

1 page Grades: K - 2
• #### teaching resource

9 posters outlining mental math strategies for addition.

9 pages Grades: 1 - 5

### Number Grid Game

A number grid game to practice determining a number that is 1 more, 1 less, 10 more, and 10 less than a given number.

22 pages Grades: 1 - 2

### Number Charts and Number Finder

A number chart and number finder template to use when learning to identify numbers that are 1 more, 1 less, 10 more, and 10 less than a given number.

22 pages Grades: 1 - 2

### Number of the Day Worksheet

A number of the day worksheet with a variety of tasks to practice number sense skills.

1 page Grades: 1 - 3

### Number Talks Teaching Resource Pack - Grade 2

A collection of number talks teaching resources that support meaningful and highly engaging conversations in the mathematics classroom.