prompt: Q: How much is 91 minus 80? A: 
random_counterfactual.prompt: Q: How much is 83 minus 20? A: 
ones_op1_counterfactual.prompt: Q: How much is 95 minus 80? A: 
ones_op2_counterfactual.prompt: Q: How much is 91 minus 80? A: 
tens_op1_counterfactual.prompt: Q: How much is 91 minus 80? A: 
tens_op2_counterfactual.prompt: Q: How much is 91 minus 20? A: 
ones_carry_counterfactual.prompt: Q: How much is 100 minus 89? A: 
tens_carry_counterfactual.prompt: Q: How much is 91 minus 80? A: 