**Let's write out the problem like this:**

**There's a pattern here!**

**Check this out:**

**There are 50 pairs of 101...**

That's |

**Dang! **

**TRY IT:**

**Find the sum of the integers from 1 to 40.**

**Find the sum of the integers from 1 to 62.**

**Let's write out the problem like this:**

**There's a pattern here!**

**Check this out:**

**There are 50 pairs of 101...**

That's |

**Dang! **

**TRY IT:**

**Find the sum of the integers from 1 to 40.**

**Find the sum of the integers from 1 to 62.**