การลบและการนับถอยหลัง แผ่นงานสำหรับ โรงเรียนอนุบาล

Act out subtraction before introducing numerals. For 5 − 2, place five counters, remove two one at a time, and say the remaining count after each removal: four, then three. Next, repeat the action as two backward jumps on a number path.

Use picture-based take-away problems, crossed-out object sets, and number paths within 10. A simple prompt such as “There are six apples; two are taken away” helps children connect the story, the backward count, and the equation 6 − 2 = 4.

Many children recount the entire set instead of counting backward, include the starting number as a step, or remove objects without tracking how many were taken away. Have them touch one object or one number-path jump for every backward count.

Host the worksheet as a digital quiz on Wayground for guided or independent practice, or print the PDF for hands-on paper work with counters. Printed submissions can be scanned or captured and graded with the Wayground for Teachers app.

Common Core kindergarten math introduces subtraction through taking-apart and taking-from situations, usually within 10. Students first represent a story with objects or drawings, then connect that model to an equation and simple counting-back strategy.

Counting back is commonly introduced in kindergarten as children begin modeling subtraction within 10. At this stage, the goal is understanding that subtraction removes an amount, not memorizing a rule.

Keep a visible number path beside the worksheet and limit early practice to one or two backward steps. For digital work, Read Aloud can support emerging readers, and reduced answer choices can help children focus on the subtraction rather than managing too many options.