One and Two less within 20: Vertical Subtraction Worksheet

Students recognize less to mean subtraction. As a result, they deduct the specified amount from the given number. They can work backward from the given number to arrive at the answer. Students have lots of practice with this concept in one and two less within 20 worksheet. As the worksheet uses the column method, it is helpful in getting students toward higher accuracy, especially with bigger numbers and in scenarios where regrouping is required.