Math 1.3
Number and operations. The student applies mathematical process standards to develop and use strategies for whole number addition and subtraction computations in order to solve problems. The student is expected to:
- (1) use concrete and pictorial models to determine the sum of a multiple of
10 and a one-digit number in problems up to 99;
- (A) use objects and pictorial models to solve word problems involving joining, separating, and comparing sets within 20 and unknowns as any one of the terms in the problem such as 2 + 4 = [ ]; 3 + [ ] = 7; and 5 = [ ] - 3;
- (B) compose 10 with two or more addends with and without concrete objects;
- (C) apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10;
- (D) explain strategies used to solve addition and subtraction problems up to 20 using spoken words, objects, pictorial models, and number sentences; and
- (E) generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20.
- Plus Plan
Pirate's Plunder - Number Line Subtraction Game
Practice using the jump strategy for subtraction from 20 with an exciting pirate-themed math game.
- Plus Plan
Addition and Subtraction Word Problem Task Cards - (Numbers 1-9)
Use a range of addition and subtraction strategies to solve twenty single-digit word problems.
- Plus Plan
Word Problem Task Cards - 2-digit + 1-digit Addition
Practice adding 2-digit and 1-digit numbers with this set of 16 word problem task cards.
- Free Plan
Fact Family Find and Flip - Addition and Subtraction Up to 20
Addition and subtraction game cards demonstrating the relationship between fact families.
- Plus Plan
Number Bonds Worksheet - Cut and Paste
Practice addition and subtraction up to twenty with a cut-and-paste number bond worksheet.
- Plus Plan
Change It! – Addition to 20 Hands-On Activity
Practice addition to 20 by rearranging the parts of whole numbers into different combinations with this hands-on math activity.
- Plus Plan
Using Doubles to Subtract Board Game
Practice using doubles to subtract with this fun, apple-themed board game.
- Plus Plan
Addition Strategy: Counting On – Worksheet
Practice the “counting on” addition strategy to solve addition problems to 20.
- Plus Plan
Addition to 20 Activity - Winter Math Puzzle for 1st Grade
Practice addition facts up to 20 with a printable winter math puzzle for kindergarten and first-grade students.
- Free Plan
Christmas Math Worksheets - Sums to 12 Activity
Practice finding number bonds and sums to 12 using printable Christmas Math worksheets for first grade.
- Plus Plan
Part Part Whole Word Problem Task Cards and Worksheet
Explore these animal-themed part-part-whole word problems that will open discussions with your young mathematicians.
- Plus Plan
Sunflower Subtraction Strategies Interactive
Practice using the ten-frame subtraction strategy with a fun self-checking interactive activity.
- Plus Plan
Subtraction Using Picture Models Worksheet
Practice subtracting numbers to 12 using picture models with a printable subtraction worksheet.
- Plus Plan
Number Bonds Subtraction - Worksheet
Practice subtraction using number bonds with differentiated number bond worksheets.
- Plus Plan
Secret Code Number Line - Worksheet
Crack the number line code with five number line codebreaker worksheets to practice number identification, addition, and subtraction.
- Plus Plan
Making Ten Memory Game
Practice making ten using ten frames with this fun memory game.
- Plus Plan
Build It! Decomposing Numbers – Task Cards
Practice decomposing numbers with this activity that has students splitting numbers into parts.
- Plus Plan
Counting On with Number Bonds – Worksheet
Begin from the larger number and count on to find the total with this worksheet.
- Plus Plan
Fall Math - Addition to 10 Task Cards
Practice addition up to 10 with this set of 20 fall-themed task cards.
- Plus Plan
Addition and Subtraction Within 20 – Worksheet
Use this worksheet with your students when exploring addition and subtraction within 20.
- Plus Plan
Grade 1 Daily Warm-Up – PowerPoint 2
Bring on the day’s lessons with math and English activities that get students excited about learning.
- Plus Plan
Addition Strategies: Make a Ten Worksheet
A 2-page worksheet that uses ten frames to model the “making ten” addition strategy.
- Plus Plan
Addition Strategies: Base-Ten Blocks Worksheet
Practice using the strategy of using base-10 blocks and regrouping to find the sum.
- Plus Plan
Addition Match-Up Puzzles
A set of 15 match-up cards to scaffold work with addition word problems.
- Plus Plan
Addition Strategy - Decompose, Then Make 10 Worksheet
Build addition strategies using digits 1-10 with this two-page decomposing numbers worksheet.
- Free Plan
Addition Strategy - Counting On Worksheet
Solve addition problems in this 2-page Counting On Addition Worksheet.
- Plus Plan
Tens Frame - Addition and Subtraction Match-Up Activity
Build addition and subtraction skills with two tens frame matching games.
- Plus Plan
Making Ten Cut and Paste Worksheet
A cut and paste worksheet to practice finding the missing addend when making ten.
- Plus Plan
Addition Worm – Worksheet
A set of differentiated addition worksheets.
- Free Plan
Cover Up! - Addition Facts Game
Develop a love of addition facts with this multiplayer Valentine’s Day board game.
- Plus Plan
Ladybug Addition and Subtraction Activity
A fun and simple adding and subtracting activity.
- Free Plan
Doubles Plus One - Grid Game
Practice the doubles plus one addition strategy with this dice game.