Mathematics Kindergarten

Strand: NUMBER AND OPERATIONS IN BASE TEN (K.NBT)

Compose and decompose numbers 11–19 to gain foundations for place value (Standard K.NBT.1).

Standard K.NBT.1

Compose and decompose numbers from 11–19 into ten ones and some further ones. Use objects or drawings and record each composition or decomposition by a drawing or equation. For example, 18 = 10 + 8. Understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.

• IXL Game: Numbers and counting up to 20: Count tens and ones - up to 20
This game helps the kindergartener understand counting tens and ones. This is just one of many online games that supports the Utah Math core. Note: The IXL site requires subscription for unlimited use.
• USBE Core Guide for Domain: Number and Operations in Base Ten (KNBT1)
This math guide provides academic vocabulary, instructional strategies, teacher resources, and assessment tasks for the Number and Operations in Base Ten domain.
• Unit 2: Comparing Numbers
For numbers 11 to19, Kindergarten students choose, combine, and apply strategies for answering quantitative questions. This includes composing and decomposing numbers from 11 to 19 into ten ones and some further ones by writing and representing the numbers, counting and producing sets of given sizes, counting the number of objects in combined sets, or counting the number of objects that remain in a set after some are taken away. Objects, pictures, actions, and explanations are used to solve problems and represent thinking.
• What Makes a Teen Number?
The purpose of this task is to help students understand the base-ten structure of teen numbers. This task was designed specifically to support students in developing fluency with tens and teen numbers.

http://www.uen.org - in partnership with Utah State Board of Education (USBE) and Utah System of Higher Education (USHE).  Send questions or comments to USBE Specialist - Shannon Ference and see the Mathematics - Elementary website. For general questions about Utah's Core Standards contact the Director - DIANA SUDDRETH .
Email:  diana.suddreth@schools.utah.gov

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