# 1.NBT.C.5 Worksheets, Workbooks, Lesson Plans, and Games

#### CCSS.MATH.CONTENT.1.NBT.C.5

:
"Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used."

These worksheets, games, and lesson plans can help students practice this Common Core State Standards skill.

## Worksheets

Missing Numbers: Ice Is Nice
Worksheet
Missing Numbers: Ice Is Nice
Kids find the missing numbers to complete the iceberg grid. This first grade math worksheet offers practice counting whole numbers to 100 and counting by fives.
Math
Worksheet
Skip Counting Practice
Worksheet
Skip Counting Practice
Math
Worksheet
Skip Counting: Count by Tens!
Worksheet
Skip Counting: Count by Tens!
Math
Worksheet
Hundreds Chart Patterns
Worksheet
Hundreds Chart Patterns
This extra-large package of number pattern worksheets is just what your kid needs to help him explore place value.
Math
Worksheet
Patterns: Driving in All Directions
Worksheet
Patterns: Driving in All Directions
Grab a number chart that goes up to a hundred and fill in the numbers surrounding the ones in the green boxes on this math and patterns worksheet.
Math
Worksheet
Vegetables Skip Counting
Worksheet
Vegetables Skip Counting
Count by tens and connect the dots to finish a picture of freshly picked vegetables.
Math
Worksheet

## Lesson Plans

Math Mind Magic
Lesson plan
Math Mind Magic
Every student can be a magician after this lesson in mentally adding and subtracting by 10. No previous magic training required!
Math
Lesson plan
The Ten Monster
Lesson plan
The Ten Monster
Here comes the Ten Monster! Get ready to learn about subtracting tens in this hands-on lesson.
Math
Lesson plan

## Workbooks

No workbooks found for this common core node.

## Games

Multiples of 10 Game Show
Game
Multiples of 10 Game Show
Kids practice adding and taking away 10 in this silly game show.
Math
Game
Game
Kids sharpen mental addition skills with this silly construction math game.
Math
Game
Ski Racer: Subtract by Multiples of 10
Game
Ski Racer: Subtract by Multiples of 10
Kids race down the mountain by correctly subtracting multiples of 10 from two-digit numbers.
Math
Game
Ski Racer: Two-Digit Addition and Finding 10 More
Game
Ski Racer: Two-Digit Addition and Finding 10 More
Practice addition to 100 using multiples of 10! This game highlights two-digit addition math.
Math
Game

## Exercises

No exercises found for this common core node.