prompt: Q: How much is 64 minus 31? A: 
random_counterfactual.prompt: Q: How much is 47 minus 25? A: 
ones_op1_counterfactual.prompt: Q: How much is 63 minus 31? A: 
ones_op2_counterfactual.prompt: Q: How much is 64 minus 33? A: 
tens_op1_counterfactual.prompt: Q: How much is 84 minus 31? A: 
tens_op2_counterfactual.prompt: Q: How much is 64 minus 21? A: 
ones_carry_counterfactual.prompt: Q: How much is 72 minus 39? A: 
tens_carry_counterfactual.prompt: Q: How much is 64 minus 31? A: 