Grade 1 10 More 10 Less — Printable No-Prep Worksheet

This Grade 1 math worksheet provides targeted practice for finding 10 more and 10 less than a given two-digit number. Students build mental math fluency and base-ten understanding by completing sequence patterns and answering direct calculation questions. The multiple-choice format allows for quick assessment of place value skills.

At a Glance

• Grade: 1 · Subject: Math
• Standard: CCSS.MATH.CONTENT.1.NBT.C.5 — Mentally find 10 more or 10 less than a two-digit number.
• Skill Focus: 10 More and 10 Less
• Format: 1 page · 12 problems · Answer key included · PDF
• Best For: Formative assessment and independent practice
• Time: 10–15 minutes

This single-page resource features 12 multiple-choice questions designed to evaluate place value comprehension. The first eight problems require students to identify the missing number in a skip-counting sequence by tens, both forwards and backwards. The final four questions ask students to directly calculate ten more or ten less than a specific two-digit number. A complete answer key is included to streamline the grading process.

This resource requires under two minutes of teacher preparation.

• Print (1 minute): Simply download the PDF and print a class set. The clean layout uses minimal ink.
• Distribute (1 minute): Hand out the single-page quiz to students. The instructions are self-explanatory, requiring no complex setup.
• Review (3 minutes): Use the provided answer key to quickly score the 12 multiple-choice questions or review them together as a class.

This streamlined workflow makes it an excellent option for emergency sub plans, morning work, or a quick exit ticket.

This worksheet is strictly aligned to CCSS.MATH.CONTENT.1.NBT.C.5: Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count. It reinforces the foundational understanding that adding or subtracting ten changes the tens digit while the ones digit remains the same. Both standard codes can be copied directly into lesson plans, IEP goals, or district curriculum mapping tools.

Assign this worksheet during independent math centers after direct instruction on place value. It serves as an effective formative assessment tool; by observing whether students are counting on their fingers or mentally shifting the tens digit, educators can quickly gauge mastery. Alternatively, use it as a Friday review quiz to consolidate the week's learning. The 10 to 15-minute completion time fits easily into standard math block rotations.

This resource is primarily designed for first-grade students developing their mental math and place value skills. It also provides valuable remediation for second graders who need to review foundational base-ten concepts before moving on to multi-digit addition and subtraction. For differentiation, pair this worksheet with physical base-ten blocks or a hundreds chart to support visual and tactile learners who are still grasping the concept of ten-jumps.

Developing mental math fluency with base-ten concepts is a critical milestone in early elementary mathematics. This resource targets CCSS.MATH.CONTENT.1.NBT.C.5, helping students mentally find 10 more or 10 less than a two-digit number. According to EdReports 2024, students who achieve automaticity in mentally adding and subtracting tens demonstrate significantly higher proficiency when introduced to standard algorithms for multi-digit operations. By practicing these specific ten-jumps without relying on rote counting by ones, learners internalize the structure of the base-ten number system. This multiple-choice format provides immediate, measurable data on that conceptual understanding. Regular exposure to these targeted place value exercises ensures students build the cognitive framework necessary for advanced arithmetic, reducing working memory load during complex problem-solving tasks in subsequent grade levels.