1 / 41

Game of 21 Start with 21 small cubes. You make take 1, 2 or 3 blocks away on your turn. The goal is to take the last cub

lani
Download Presentation

Game of 21 Start with 21 small cubes. You make take 1, 2 or 3 blocks away on your turn. The goal is to take the last cub

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    3. 1+2+3+4+5+…..+96+97+98+99

    4. Operations = Actions

    7. Active Learning

    8. Operations With Numbers

    11. Key Concept 3Key Concept 3

    16. Think Turnarounds 14 + 21 = 21 + 14 Commutative Property Think Compensation 16 + 29 = 15 + 30 Think Compatible 3 + 32 + 17 = 32 + 20 Associative Property Think Simplification 45 + 78 = 110 + 13

    20. Think Related Facts 17 – 9 = 8 / 9 + 8 = 17 Think Decomposition 34 – 23 = 34 – 20 – 3 Think Commutative Problem 12 – 9 ? 9 – 12 Think Equal Offset 68 – 14 = 70 – 16 (Careful!)

    34. Think Expanded notation 96 ? 4 = (80+16) ? 4 Think multiplication 24 ? 6 = 4 // 4 x 6 = 24 Think leftovers 32 = ( 7 x ______ ) + _______ 55 = ( 9 x ______ ) + _______ 22 = ( 5 x ______ ) + _______ Division Mats / ‘fair sharing’

More Related