We can investigate!
I can add and subtract multiples of 10!
I can recognize and represent the place value of each digit it 2 and 3 digit numbers.
I can find the difference between a 2 digit number and 100.
I can find pairs of numbers that equal 100.
I can estimate the sums of 2and 3 digit numbers using knowledge of place value and known combinations.
I can recognize and represent the groups of 10s in 3-digit numbers.