This is a bundle of our multi-digit addition and subtraction worksheets. It is great for differentiation, as it covers 2-digit, 3-digit, and 4-digit numbers and involves operations with and without regrouping and across zeros.There are mixed activities, such as vertical addition and subtraction, finding the missing addend/subtrahend, fill in the missing number, solving for the sum/difference, matching two columns, adding or subtracting 3 numbers, and more.With so many worksheets to choose from,