Updated: 04 Nov 2020
A set of dominoes to use in the classroom when learning combinations of 20.
Non-Editable: PDF
Pages: 4 Pages
Grades: 2 - 3
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations;
Solve with fluency one-step and two-step problems involving addition and subtraction within 1,000 using strategies based on place value, properties of operations, and the relationship between addition and subtraction;
A set of dominoes to use in the classroom when learning combinations of 20.
Use this resource to help students identify the different number combinations that make 20.
Print out the dominoes on cardstock and cut them out. Then, store them in a resealable bag.
Individually or in small groups, students connect the dominoes by matching two numbers that make 20, i.e., 2 + 18, 5+ 15, 16 +4.
This resource is great to use as a math center activity.
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations;
Solve with fluency one-step and two-step problems involving addition and subtraction within 1,000 using strategies based on place value, properties of operations, and the relationship between addition and subtraction;
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