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
Hundreds Chart Challenge
Worksheet
Hundreds Chart Challenge
Has your little math whiz mastered the hundreds chart? Give him a fun challenge with these fill-in-the blank pieces of the chart.
Worksheet
Adding Tens
Worksheet
Adding Tens
Students draw ten and one dollar bills for practice adding multiples of ten to two-digit numbers in this money math worksheet.
1st Grade
Math
Worksheet
Dime Word Problems
Worksheet
Dime Word Problems
Students draw dimes and pennies to practice solving for 10 more and 10 less than a given two-digit number in this money math worksheet.
1st Grade
Math
Worksheet
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.
1st Grade
Math
Worksheet
One More Ten More
Interactive Worksheet
One More Ten More
Build fluency by identifying one more and ten more than a given number within 100 with this worksheet!
Interactive 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.
1st Grade
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!
1st Grade
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.
1st Grade
Math
Lesson plan
Workbooks
No workbooks found for this common core code.
Games
Addition Demolition
Game
Addition Demolition
Kids sharpen mental addition skills with this silly construction math game.
1st Grade
Math
Game
Multiples of 10 Game Show
Game
Multiples of 10 Game Show
Kids practice adding and taking away 10 in this silly game show.
1st Grade
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.
1st Grade
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.
1st Grade
Math
Game
Exercises
No exercises found for this common core code.
