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Glossary of Addition and Subtraction Patterns

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3 + 5=
8
8,000 - 4,000=
4,000
300 + 500=
800
8 - 4=
4
8 + 7=
15

80 + 70=
150
8,000 + 7,000=
15,000
80,000 + 70,000=
150,000
800 + 700=
1500
80 - 40=
40
800 - 400=
400
90 - 30=
60
9,000 - 3,000=
6,000
30 + 50=
80
9 - 3=
6
900,000 - 300,000=
600,000
3,000 + 5,000=
8,000

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