Understanding Adding and Subtracting in Tens

What is the next number in the sequence if you start at 48 and count up in tens?

• 88

• 78

• 58

• 68

If you start at 76 and count backwards in tens, what number do you reach after two steps?

• 66

• 56

• 36

• 46

When adding 10 to the number 42, which column in the place value grid changes?

• Ones

• Tens

• Hundreds

• Thousands

What is the result of adding 10 to 65?

• 105

• 85

• 75

• 95

If you subtract 10 from 81, what is the new number?

• 51

• 61

• 41

• 71