prompt: Q: How much is 91 minus 10? A: 
random_counterfactual.prompt: Q: How much is 90 minus 34? A: 
ones_op1_counterfactual.prompt: Q: How much is 95 minus 10? A: 
ones_op2_counterfactual.prompt: Q: How much is 91 minus 10? A: 
tens_op1_counterfactual.prompt: Q: How much is 71 minus 10? A: 
tens_op2_counterfactual.prompt: Q: How much is 91 minus 30? A: 
ones_carry_counterfactual.prompt: Q: How much is 100 minus 19? A: 
tens_carry_counterfactual.prompt: Q: How much is 91 minus 10? A: 