prompt: Q: How much is 81 minus 66? A: 
random_counterfactual.prompt: Q: How much is 86 minus 36? A: 
ones_op1_counterfactual.prompt: Q: How much is 88 minus 66? A: 
ones_op2_counterfactual.prompt: Q: How much is 81 minus 60? A: 
tens_op1_counterfactual.prompt: Q: How much is 91 minus 66? A: 
tens_op2_counterfactual.prompt: Q: How much is 81 minus 56? A: 
ones_carry_counterfactual.prompt: Q: How much is 89 minus 64? A: 
tens_carry_counterfactual.prompt: Q: How much is 81 minus 66? A: 