2-digit subtraction
436 + 159 =
What is 595
46 - 21 =
What is 25
345 + 287 =
What is 632
109 - 99 =
What is 10
456 + 378 =
What is 834
345 + 436 =
What is 781
400 + 321 =
What is 721
58 - 34 =
What is 24
278 + 166 =
What is 444
831 + 556 =
What is 1387