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Mental Math
Use Mental Math
Use mental math! 250 - 17=
Mental Math
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1
Use mental math! 250 - 17=
233
267
133
243
2
Use Mental Math
70
65
64
75
3
It may be helpful to do this when using the jump strategy for mental addition
Draw an open number line
Guess and check your answer
Use a calculator
Use an algorithm
4
Use mental math to add. 64+4=
60
70
68
67
5
Solve the word problem using pencil and paper or mental math.
63
53
51
11
6
Mental Math simplifies problems with constant solving of math problems.
False
True
7
Use mental math.
22
32
174
38
8
Solve using mental subtraction
69
26
96
16
9
mental math
math that is CRAZY!
background knowledge about fractions
math calculations in your mind, without paper and pencil
the basic symbols used to write numbers
