prompt: Q: How much is 91 minus 23? A: 
random_counterfactual.prompt: Q: How much is 87 minus 29? A: 
ones_op1_counterfactual.prompt: Q: How much is 97 minus 23? A: 
ones_op2_counterfactual.prompt: Q: How much is 91 minus 20? A: 
tens_op1_counterfactual.prompt: Q: How much is 61 minus 23? A: 
tens_op2_counterfactual.prompt: Q: How much is 91 minus 43? A: 
ones_carry_counterfactual.prompt: Q: How much is 99 minus 21? A: 
tens_carry_counterfactual.prompt: Q: How much is 91 minus 23? A: 