Question

kwan has 27 baseball cards.
alex has 3 times as many as kwan.
in the equations below, n stands for the number of baseball cards alex has.
drag each equation to the box it matches.
27 × 3 = n
n ÷ 3 = 27
27 ÷ 3 = n
n − 3 = 27
equations that model the situation
equations that do not model the situation

Explanation:

Step1: Analyze the situation

Kwan has 27 cards, Alex has 3 times as many, so \( n = 27\times3 \).

Step2: Check each equation

• \( 27\times3 = n \): Matches, since \( n \) is 3 times 27.
• \( n\div3 = 27 \): Rearranged from \( n = 27\times3 \) (divide both sides by 3), so matches.
• \( 27\div3 = n \): This would mean Alex has less than Kwan, which is wrong.
• \( n - 3 = 27 \): Involves subtraction, not related to "3 times as many", so wrong.

Answer:

Equations That Model the Situation: \( 27\times3 = n \), \( n\div3 = 27 \)
Equations That Do NOT Model the Situation: \( 27\div3 = n \), \( n - 3 = 27 \)