5 + 5 - Start with 5, add 5 more., 5 x 3 - Start with 5, copy it 3 times. , 6 x 2 - Start with 6, copy it 2 times., 10 - 3 - Start with 10, remove 3. , 20 ÷ 2 - Start with 20, share it with 2 groups., 8 ÷ 4 - Start with 8, share it with 4 groups., 12 ÷ 3 - Start with 12, share it with 3 groups., 9 x 4 - Start with 9, copy it 4 times., 7 - 4 - Start with 7, remove 4. , 9 + 5 - Start with 9, add 5 more. ,

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