Adding 3,400 + 2,500 is the fact 34 + 25 with the zeros put back, and 9,000 - 4,000 is 9 - 4. Each sheet has twelve bare problems, sums and differences in turn, with a line after the equals sign, and your child writes the answer without a column. Building Confidence uses tens and fifties inside 1,000, On Level hundreds and thousands, and Challenge Me answers that cross a thousand or ten thousand.
What your child will learn
Add and subtract multiples of 10, 100 and 1,000 mentally
Use a basic fact and put the zeros back
Check an answer by thinking of the opposite operation