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Add a two-digit number and a multiple of 10 (e.g., 28 + 30 = ).
Clarifications:

Essential Understandings

Concrete:

  • Make a set of base ten blocks that represents a two-digit number.
  • Add another set of base ten blocks that represents a multiple of 10.
  • Recount the combined set to get a sum.
Representation:
  • Make a visual representation of base ten blocks that represents a two-digit number.
  • Make a visual representation of another set of base ten blocks that represents a multiple of 10.
  • Recount the combined set to get a sum.
  • Use a hundreds chart to count by 10’s from any given two-digit number.
  • Use a hundreds chart to add a two-digit number and a multiple of 10.
  • Understand the following concepts and vocabulary: addition

Access Point #: MAFS.1.NBT.3.AP.4b (Archived Access Point)
Access Point Standards

Visit the specific benchmark webpage to find related instructional resources.

  • MAFS.1.NBT.3.4: Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
Access Point Information
Number:
MAFS.1.NBT.3.AP.4b
Category:
Access Points
Cluster:
Use place value understanding and properties of operations to add and subtract. (Major Cluster) : 

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Access Point Courses
  • Grade One Mathematics (#5012030): The benchmarks in this course are mastery goals that students are expected to attain by the end of the year. To build mastery, students will continue to review and apply earlier grade-level benchmarks and expectations.
  • Access Mathematics Grade 1 (#7712020): Access Courses:

    Access courses are for students with the most significant cognitive disabilities. Access courses are designed to provide students access to grade-level general curriculum. Access points are alternate academic achievement standards included in access courses that target the salient content of Florida’s standards. Access points are intentionally designed to academically challenge students with the most significant cognitive disabilities. 

  • Foundational Skills in Mathematics K-2 (#5012005): This course supports students who need additional instruction in foundational mathematics skills as it relates to core instruction. Instruction will use explicit, systematic, and sequential approaches to mathematics instruction addressing all strands including number sense & operations, fractions, algebraic reasoning, geometric reasoning, measurement and data analysis & probability. Teachers will use the listed benchmarks that correspond to each students’ needs. 

    Effective instruction matches instruction to the need of the students in the group and provides multiple opportunities to practice the skill and receive feedback. The additional time allotted for this course is in addition to core instruction. The intervention includes materials and strategies designed to supplement core instruction.