prompt: Q: How much is 68 minus 61? A: 
random_counterfactual.prompt: Q: How much is 99 minus 18? A: 
ones_op1_counterfactual.prompt: Q: How much is 63 minus 61? A: 
ones_op2_counterfactual.prompt: Q: How much is 68 minus 67? A: 
tens_op1_counterfactual.prompt: Q: How much is 98 minus 61? A: 
tens_op2_counterfactual.prompt: Q: How much is 68 minus 21? A: 
ones_carry_counterfactual.prompt: Q: How much is 73 minus 66? A: 
tens_carry_counterfactual.prompt: Q: How much is 68 minus 61? A: 