prompt: Q: How much is 91 minus 52? A: 
random_counterfactual.prompt: Q: How much is 40 minus 23? A: 
ones_op1_counterfactual.prompt: Q: How much is 98 minus 52? A: 
ones_op2_counterfactual.prompt: Q: How much is 91 minus 50? A: 
tens_op1_counterfactual.prompt: Q: How much is 61 minus 52? A: 
tens_op2_counterfactual.prompt: Q: How much is 91 minus 52? A: 
ones_carry_counterfactual.prompt: Q: How much is 99 minus 50? A: 
tens_carry_counterfactual.prompt: Q: How much is 91 minus 52? A: 