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In Mathematics / Middle School | 2014-01-15

How do you add 10 to two-digit numbers?

Asked by johnpara9

Answer (3)

It depends. Multiples of 10 are: 10, 20, 30, 40, 50........... And a 2 digit number can be anything between 10 and 99.
To comment: Rodney would have 39 pieces of fruit.

Answered by sammyguy | 2024-06-10

**When adding 10 to any two digit number, increase the left digit by 1. For example 20+10= 30. 55+10=65. If a problem says 10+ (a number), you can reverse the order the numbers are in because of the commutative property of addition. Example: 10+50 eqauls 50+10. Both equations equal 60. Also, Rodney would have 39 pieces of fruit since 20+19 is 39. **

Answered by mattr4960 | 2024-06-12

To add 10 to a two-digit number, increase the tens digit by 1 while keeping the units digit the same. For example, 34 + 10 becomes 44. The process is straightforward and can be applied to any two-digit number.
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Answered by mattr4960 | 2024-10-01