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M_G4.09.pptx
Cut a sheet of paper into 16 equal pieces.
1
Math 4.09
2
Odd and even
The laser beam is reflected in the mirrors as shown in the figure.
What letter will he land on at the end of the path?
3
Add
2020+ = 2021+
2021+ = 2022+
2019+ = 2021+
2018+ = 2019+
2021+ = 2021+
2020+ = 2024+
=2 = 1
=2 = 1
=3 = 2
=5 = 5
=5 = 1
=3 = 1
4
Add
37 + 40 =
47 + 40 =
27 + 50 =
37 + 50 =
47 + 50 =
18 + 7 =
18 + 5 =
18 + 4 =
19 + 1 =
19 + 3 =
19 + 5 =
54 - 8 =
54 - 7 =
54 - 3 =
54 - 9 =
5
Add and Subtract
19 + 1= 19 + 2= 19 + 3=
19 - 1= 19 - 2= 19 - 3=
999 + 1= 999 + 2= 999 + 3=
900 - 1= 900 - 2= 900 - 3=
6
Multiply
12 ×5
23 ×5
29 ×5
209 ×5
299 ×5
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