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Doubling Numbers Up to 20 - Addition WORKSHEET
Suitable for Grades: 1st Grade, 2nd Grade
CCSS: 1.NBT.C.4, 2.NBT.B.5
CCSS Description: Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
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 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Doubling Numbers Up to 20 - Addition WORKSHEET DESCRIPTION
Here students can use numbers lines to aid them in the doubling of numbers up to 20.
All questions are presented as addition, for example 8 + 8. There are eight questions altogether, each with its own number line. Learners will practice doubling single and two digit numbers as well as both odd and even numbers. Some numbers require regrouping, for example 17 + 17 but using a number line can eliminate this if preferred.
