Video: Adding Two Numbers up to 99 in Written Form

Complete the following: sixty-four = _ +_ = _.

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Video Transcript

Complete the following. sixty-four equals what plus what which equals what?

We can write the number 64 using the digits six and four. We can break the number 64 apart, or partition the number, into its tens and ones. The six digit in 64 is worth six 10s, which is 60. And the four digit in 64 is worth four ones. So, sixty-four equals 60 plus four. And if we write the number 64 using digits, we use a six and a four. The missing numbers are 60, four, and 64. The number 64, in words, is equal to 60 plus four which equals 64.

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