tiana\n28 + 2 + 54\nyusuf\n28 + 2 + 52\nwhose expression has the same value as 28 + 54?\nyusuf\nexplain why…

tiana\n28 + 2 + 54\nyusuf\n28 + 2 + 52\nwhose expression has the same value as 28 + 54?\nyusuf\nexplain why yusufs expression is correct.\nyusuf correctly broke apart 54 into 2 + 52.\nexplain tianas mistake.\ntiana added? to 28 to get to the next ten, but she did not break apart 54.

tiana\n28 + 2 + 54\nyusuf\n28 + 2 + 52\nwhose expression has the same value as 28 + 54?\nyusuf\nexplain why yusufs expression is correct.\nyusuf correctly broke apart 54 into 2 + 52.\nexplain tianas mistake.\ntiana added? to 28 to get to the next ten, but she did not break apart 54.

Answer

Explanation:

Step1: Analyze Tiana's expression

Tiana's expression is (28 + 2+54). The original expression is (28 + 54). If we use the associative property of addition (a+(b + c)=(a + b)+c), but here (28+2 + 54=(28 + 54)+2\neq28 + 54)

Step2: Analyze Yusuf's expression

Yusuf's expression is (28+2 + 52). We know that (54=2 + 52). By the associative property of addition (a+(b + c)=(a + b)+c), (28+54=28+(2 + 52)=(28 + 2)+52)

Step3: Find Tiana's mistake

To get (28) to the next ten ((30)), we need to add (2) (since (28+2 = 30)). But in (28+2+54), she just added (2) extra to the sum of (28 + 54)

Answer:

  • Yusuf's expression is correct because (28 + 54=28+(2 + 52)=(28 + 2)+52) (using the associative property of addition (a+(b + c)=(a + b)+c))
  • Tiana added (2) to (28) to get to the next ten, but she did not break - apart (54) (she should have split (54) into (2) and (52) instead of just adding an extra (2))