Q1.The Math Team designed a logo shaped like a multiplication symbol, shown below on a grid of 1-inch squares. What is the area of the logo in square inches?
(A) 10 (B) 12 (C) 13 (D) 14 (E) 15
⏩ 解析:(A)
將陰影部分切割為5個小正方形,每一個面積為2。
2×5=10
Q2.Consider these two operations:
What is the value of?
(A) -20 (B) 4 (C) 16 (D) 100 (E) 220
?⏩ 解析:(D)
Q3.When three positive integers a, b, and c are multiplied together, their product is 100. Suppose a < b < c. In how many ways can the numbers be chosen?
(A) 0 (B) 1 (C) 2 (D) 3 (E) 4
?⏩ 解析:(E)
Q4.The letter M in the figure below is first reflected over the line q and then reflected over the line p. What is the resulting image?
?⏩ 解析:(E)
根據“over the line q”以及“reflected over the line p”,可得以下圖示情況,僅圖E符合。
Q5.Anna and Bella are celebrating their birthdays together. Five years ago, when Bella turned 6 years old, she received a newborn kitten as a birthday present. Today the sum of the ages of the two children and the kitten is 30 years. How many years older than Bella is Anna?