Decomposing numbers into ten and some ones
Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (such as 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones. (CCSS.Math.Content.K.NBT.A.1)
Newly revised 6/27/15
These math centers and worksheets designed to give students repeated practice in writing, showing and decomposing teen numbers (10+8=18). These activities can be used during math centers, small group instruction, morning work, homework, sub work or RTI.
Print and laminate and teach!
13 Math Centers
Write and Show (Unfamiliar Configuration) - Decompose teen numbers into ten and some ones using an unfamiliar configuration of stars (writing an equation)
Write and Show (Familiar Configuration) - Decompose teen numbers into ten and some ones using an unfamiliar configuration of stars (sentence 10 and BLANK more is BLANK)
Mystery Box Match-Up - Match up the base ten blocks with the numeral
Read, Build, Say - Read the number, build the number on a double ten-frame and decompose the number by writing it and saying it (equation and sentence frame)
What's the Number? - Put counters in a cup, have students count and say how many on a ten-frame
Ten and Some Ones (Links) - using math manipulatives, students build teen numbers (ten and some ones)
Beep! Beep! Ten and some ones Truck - students flip over the card add that many on a double ten frame and write an equation and sentence
3 Different types of Puzzles
Roll and Record
Spin and Record
Ten ones and some more sort - students sort pictures
Spin and Write - spin the spinner, write or cut/glue the picture.
Show it - read the number and decompose the number by drawing a picture. You can use a daber, stickers or draw a picture
Additional materials needed - paper clip, cup, tissue box(optional)!
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