Adding with Tens and Ones
Key Vocabulary Words: ones: shows how many ones are in a number tens: the tens digit shows how many groups of ten are in a number
skip count: you use patterns to count when you skip count
hundred chart: a chart that shows numbers 1 to 100
sum: the whole or total
addend: the numbers you add together to find the whole
regroup: make 10 ones as 1 ten to find the sum
Videos:
- 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
Key Vocabulary Words: ones: shows how many ones are in a number tens: the tens digit shows how many groups of ten are in a number
skip count: you use patterns to count when you skip count
hundred chart: a chart that shows numbers 1 to 100
sum: the whole or total
addend: the numbers you add together to find the whole
regroup: make 10 ones as 1 ten to find the sum
Videos:
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