Addition Strategies (single digit addition)
count up
Make 10
Add doubles
Subtraction Strategies (single digit subtraction)
count back
add to subtract
count on to subtract
Understanding Place Value
10 can be thought of as a bundle of ten ones—called a “ten.” 1 day
The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
Comparing Numbers
Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and < .
Understanding Addition and Subtraction with tens and ones ( two digit addition and subtraction)
add/ subtract within 100 using 10's