1. Tens – Tens - Tens Adding tens and ones Primary Math CCS: 2.NBT.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. 2/NBT.8, 2.NBT.9, 2.OA.1 This activity combines adding tens and ones, adding from a hundreds chart and adding using break apart to make tens strategies. Introduce the three anchor charts and leave several copies of the charts at the station for the students to refer to when doing the activity. Extra blank card pages are included for additional teacher creation or differentiation. What’s included: □ Task Card in WORD (click on slide to open in WORD for editing OR open the separate TASK CARD DOC on the website) □ Activity Sheet □ Anchor Charts □ Student Activity Cards for self or partner directed work □ Answer Key for partner-checking □ Materials Needed: Any type of counters; counting cubes, cm squares, etc., copies of the Challenge Question Answer Sheets. □ Technology Connection Copyright © 2013 Innovative Educational Programs. Reproduction rights granted to CHILD Teachers and permitted only for use as instructional material. www.ieponline.com

2. Copyright © 2013 Innovative Educational Programs. Reproduction rights granted to CHILD Teachers and permitted only for use as instructional material. www.ieponline.com

3. Mental Math – Counting On When one addend is less than 10 or a multiple of 10 you can use counting on. © Innovative Educational Programs Start at 48 and count on by tens… 48, 58, 68, 78

4. Mental Math – Break Apart to make a 10 When adding two addends such as, 36 + 7, you can break apart the number in the ones place to make groups of 10. © Innovative Educational Programs 36 + 4 = 40 40 + 3 = 43 36 + 7 = 43

5. Mental Math – Adding on a Hundred Chart You can count on by tens in a hundred chart by moving down a column. You can count on by ones in a hundred chart by moving right in a row. © Innovative Educational Programs

6. Tens-Tens-Tens Activity Sheet Counting OnBreak Apart to make 10Hundred Chart

9. Tens-Tens-Tens Answer Sheet Counting OnBreak Apart to make 10Hundred Chart 52 + 40 =92 25 +8 = 25 + 5 + 3 = 33 48 + 36 = 84 20 + 77 = 97 6 + 37 = 3 + 3 + 37 = 43 37 + 14 = 51 30 + 28 = 58 48 + 4 = 48 + 2 + 2 = 52 52 + 29 = 81 40 + 25 = 65 58 + 5 = 58 + 2 + 3 = 63 68 + 24 = 92 63 + 30 =93 7 + 64 = 1 + 6+ 64 = 71 18 + 55 = 73 49 + 20 = 69 9 + 73 = 2 + 7 + 73 = 82 58 + 37 = 95

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