
subtraction_1digit_1digit_No11

subtraction_1digit_1digit_No12

subtraction_1digit_1digit_No13
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subtraction_1digit_1digit_No14

subtraction_1digit_1digit_No15

subtraction_1digit_1digit_No16
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subtraction_1digit_1digit_No17

subtraction_1digit_1digit_No18

subtraction_1digit_1digit_No19

subtraction_1digit_1digit_No20