Level 1, Lesson 16: Subtract Any Number from 1000

All from 9 and the last from 10: subtract each digit from 9, and the final digit from 10.

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Q11000 − 357

Q21000 − 482

Q31000 − 736

Q41000 − 129

Q51000 − 648

Q61000 − 274

Q71000 − 513

Q81000 − 905