Regrouping Review: Mixed Carrying and Borrowing

This review worksheet mixes everything regrouping has to offer onto one page: column additions that need carrying, column subtractions that need borrowing, side by side in no particular pattern. The dashed carry boxes stand ready above the additions. Before touching any digits, the child must do something none of the single-skill pages asked for — read the sign, choose the right method, and only then start working the columns from the right.

Mixed practice is where regrouping proves it has truly been learned. On a page of all-addition problems, a child can coast on momentum, carrying by reflex without ever deciding anything; the mix takes that away. Every problem now opens with a choice — add or subtract? — and continues with judgment calls — does this column even need regrouping? Interleaving skills this way feels harder than drilling them separately, and that difficulty is precisely the benefit: retrieval with a decision attached is what sticks, and it is exactly what tests and real life serve up. A clean run through this page means carrying and borrowing are no longer two rehearsed tricks but one flexible tool.

The PDF prints free and makes an honest weekly check-up — the wrong-method error, adding when the sign says minus, tells you attention needs training, not arithmetic. Wobbly columns point back to subtracting across zeros or 3-digit addition with carrying, whichever direction needs the reps.