Practice adding and subtracting within 20 using a Double 10-frame & number line. Represent a teen number using a number bond to solve a Mystery Math Mistake. Use Notice and Wonder with a marble game ...
Help your students to mentally add and subtract multiples of 10 and multiples of 100 from a number between 100-900 using the visual support of a Number Line with NO PREP CLICK-PRINT-and- GO sets of ...
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