Add and Subtract 6-Digit and 4-Digit Numbers without Regrouping: Missing Numbers Worksheet

Children use their math skills to complete this add and subtract 6-digit and 4-digit numbers without regrouping worksheet. In this worksheet, students practice solving problems written in the horizontal format. How numbers are laid out in a problem affects the method a student employs to solve it. Therefore to develop actual fluency and mastery of multiple strategies, students must practice different formats.