10-2-15 mental addition and subtraction.gwb - 1/6 - fri...

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10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri Oct 02 2015 10:00:06

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Page 1: 10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri ...mrsholdwick.weebly.com/uploads/5/3/3/1/53310921/10... · final answer. 57 + 58 + 60 = so, 57 + 58 = Use mental math tos

10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri Oct 02 2015 10:00:06

Page 2: 10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri ...mrsholdwick.weebly.com/uploads/5/3/3/1/53310921/10... · final answer. 57 + 58 + 60 = so, 57 + 58 = Use mental math tos

10-2-15 Mental Addition and Subtraction.GWB - 2/6 - Fri Oct 02 2015 10:05:22

Page 3: 10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri ...mrsholdwick.weebly.com/uploads/5/3/3/1/53310921/10... · final answer. 57 + 58 + 60 = so, 57 + 58 = Use mental math tos

10-2-15 Mental Addition and Subtraction.GWB - 3/6 - Fri Oct 02 2015 10:12:41

Page 4: 10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri ...mrsholdwick.weebly.com/uploads/5/3/3/1/53310921/10... · final answer. 57 + 58 + 60 = so, 57 + 58 = Use mental math tos

10-2-15 Mental Addition and Subtraction.GWB - 4/6 - Fri Oct 02 2015 10:16:42

Page 5: 10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri ...mrsholdwick.weebly.com/uploads/5/3/3/1/53310921/10... · final answer. 57 + 58 + 60 = so, 57 + 58 = Use mental math tos

10-2-15 Mental Addition and Subtraction.GWB - 5/6 - Mon Oct 05 2015 09:59:37

Page 6: 10-2-15 Mental Addition and Subtraction.GWB - 1/6 - Fri ...mrsholdwick.weebly.com/uploads/5/3/3/1/53310921/10... · final answer. 57 + 58 + 60 = so, 57 + 58 = Use mental math tos

10-2-15 Mental Addition and Subtraction.GWB - 6/6 - Mon Oct 05 2015 10:09:42