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Adding Up to 20 with Number Friends
1 / 5 · level: 🌳 Sage
Lily has 9 stickers. She earns 8 more stickers. Her brother says she now has 18. Is her brother correct?
Yes, 9 + 8 = 18
No, 9 + 8 = 17
No, 9 + 8 = 16
Yes, 9 + 8 = 19
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