Math Exam Practice Quiz For A 7th Gradee

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When Joe tried to decide whether $5 was enough money, it would make sense to use estimates rather than exact values. This is because using estimates would give Joe a rough idea of whether he has enough money to buy all the items or not. Exact values may not be necessary in this situation as Joe only needs to determine if $5 is sufficient, rather than calculating the exact cost of each item.

The card is most likely to be white because it has the highest probability of being chosen. The bag contains 1/2 white cards, which is the largest proportion compared to the other colors.

The ratio of the length of a side of a square to its perimeter is 1:4. This means that the length of one side of the square is one-fourth of its perimeter. In a square, all sides are equal in length, so if we let x represent the length of one side, the perimeter would be 4x. Therefore, the ratio of the length of a side to its perimeter is 1:4.

The weight (mass) shown on the scale is 180g because it is the only option provided.

The expression "m + m + m + m" represents adding four instances of the number m together. This can be simplified as 4m, which means multiplying m by 4. Therefore, the correct equivalent expression is 4m.

The first group has 3/4 of 60 people, which is 45 people. The second group has 2/3 of 60 people, which is 40 people. Therefore, 45 - 40 = 5 more people in the first group board buses than in the second group.

The cake takes three-quarters of an hour to bake, which is equivalent to 45 minutes. If the cake was put in the oven at 7:20, then it should be taken out 45 minutes later. Adding 45 minutes to 7:20 gives us 8:05, which is the correct time to take the cake out of the oven.

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The given expression is a division of two fractions. To divide fractions, we need to multiply the first fraction by the reciprocal of the second fraction. In this case, the reciprocal of 4/15 is 15/4. Multiplying 8/35 by 15/4 gives us (8/35) * (15/4) = (8 * 15) / (35 * 4) = 120/140. Simplifying this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 20, we get 6/7. Therefore, the correct answer is 6/7.

The ratio of red paint to the total amount of paint is 5:9. This means that for every 5 liters of red paint, there are 9 liters of paint in total.

Clarissa has 3 times as many hats as Juan, who has 5 fewer hats than Maria. Therefore, Juan has n-5 hats. Multiplying this by 3 gives us 3(n-5), which represents the number of hats that Clarissa has.

The question states that there were 1172 students at Beaton High School last year. It also mentions that this year there are 15 percent more students than last year. To find the approximate number of students this year, we can calculate 15 percent of 1172, which is 175. Adding this to the number of students last year, we get 1172 + 175 = 1347. Since the question asks for an approximate answer, we can round this to the nearest hundred, which gives us 1400. Therefore, the correct answer is 1400.

A quadrilateral must be a parallelogram if it has two pairs of parallel sides. This is because a parallelogram is defined as a quadrilateral with opposite sides that are parallel and equal in length. If a quadrilateral has two pairs of parallel sides, it means that both pairs of opposite sides are parallel and equal, satisfying the definition of a parallelogram.

The longest time is 1500 minutes because it is a larger unit of time compared to the other options. 1500 minutes is equivalent to 25 hours, which is greater than 10 hours and 15,000 seconds.

The expression "yxyxy" is equal to y^3 because it represents the multiplication of y with itself three times. Each "y" in the expression represents y^1, and since we have three "y"s, we can multiply them together to get y^3.

The graph shows that as the speed of the car increases, the distance traveled before coming to a stop also increases. At a speed of 80 km per hour, the car will travel approximately 70m before coming to a stop after the brakes are applied.

The equation (n - 1) + n + (n + 1) = 81 represents the sum of three consecutive whole numbers. The middle whole number is represented by "n" in the equation. By solving the equation, we can find the value of "n" which will give us the middle whole number.

The length of the pencil in the figure is closest to 10.5cm.

To find the number of 750 mL bottles that can be filled from 600 L of water, we need to convert the volume of water to the same unit as the volume of each bottle. Since there are 1000 mL in 1 L, 600 L is equal to 600,000 mL. Dividing 600,000 mL by 750 mL gives us 800, which is the number of bottles that can be filled. Therefore, the correct answer is 800.

The trapezoid can be divided into five triangles of the same shape and size as the shaded triangle.

Since three-fifths of the students in the class are girls, it means that the remaining two-fifths are boys. Adding 5 girls and 5 boys to the class does not change the ratio of girls to boys. Therefore, there will still be more boys than girls in the class.