Math practice · Week 10 · Friday
Get ready: I can find 10 or 100 more or less and add big numbers.
What's my number? Solve in your head.
- I am 10 more than 590. What am I?Answer: 600
- I am 100 less than 417. What am I?Answer: 317
- I am 10 less than 800. What am I?Answer: 790
Which digit changed? Circle it.
- 356 → 456onestenshundredsAnswer: hundreds
- 356 → 366onestenshundredsAnswer: tens
- Keep it sharp: 263 + 158 = ____Answer: 421
Challenge
- Start at 145. Add 100, add 10, then take away 10. Where do you end?Answer: 245
Second Grade · Week 10 · Friday · secondgrade.com