Write equations that correspond to a mental method for calculating the sum below. State specifically which properties of addition were used (if any), and where. 993 + 2389 -Write equations that correspond to a mental method for calculating the difference below. State specifically which properties of addition were used (if any), and where. 684 −295 - Write equations that correspond to a mental method for calculating the sum below. State specifically which properties of addition were used (if any), and where. 427 + 28 -Write equations that correspond to a mental method for calculating the difference below. State specifically which properties of addition were used (if any), and where. 237 −40
-Write equations that correspond to a mental method for calculating the sum below. State specifically
which properties of addition were used (if any), and where.
993 + 2389
-Write equations that correspond to a mental method for calculating the difference below. State specifically
which properties of addition were used (if any), and where.
684 −295
- Write equations that correspond to a mental method for calculating the sum below. State specifically
which properties of addition were used (if any), and where.
427 + 28
-Write equations that correspond to a mental method for calculating the difference below. State specifically
which properties of addition were used (if any), and where.
237 −40
With the help of mental method We have to calculate the given sum.
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