Unit/Area of Study: Number Sense Divisibility Rules

AOI: Human Ingenuity Unit Question: How do we communicate using rules in Mathematics? ATL: Communication, Problem Solving and Thinking Skills

Grade 7 Math Quiz Percent of a Quantity/Percent, Fraction, Decimal Conversion September 2010Completion Complete each statement. Please show all workings.

1. As a decimal, Workings:

is (express as a recurring decimal) ______________________ (answer).

2. 0.0007% expressed as a decimal is _______________________(answer) Workings: 3. /2 Expressed as a decimal, Workings: is ________________________(answer)

4. Expressed as a percent, 0.3 is equivalent to (rounded to the nearest percentage point) ________________________ (answer)

5. The area of the backyard of a house is 180 m2. If 15% of the backyard is planted with flowers, he area covered with flowers is _______________________(answer) *Remember your Units. Workings:

The answer to 3.9% of 160 is ________________________(answer) Short Answer Write your answer in the space provided. Please show all your workings. 7. Express each fraction as a percent. a) _______________ (answer

b)

_______________ (answer)

c)

_______________ (answer)

8. Calculate 115% of each measurement. a) 200 g = _______________ (answer) b) 4 m = _______________ (answer) Workings: a) b)

9. Express 148% as a fraction. Express your answer in lowest terms._____________(answer) Workings:

Unit/Area of Study: Number Sense Divisibility Rules

AOI: Human Ingenuity Unit Question: How do we communicate using rules in Mathematics? ATL: Communication, Problem Solving and Thinking Skills

10. Brian borrowed $2000 from his brother and paid it back with interest four years later. Brian repaid his brother 105% of what he borrowed. In total, how much did Brian repay his brother? ______________(answer) Workings: 11. a) b)

Eja wants to save 25% of his allowance each month for a new bicycle. His allowance each month is $80, and the bicycle costs $220. a) How much will Eja save each month? _______________(answer) b) How many months does Eja have to save before he has enough money to buy the bicycle? Workings:

_______________(answer) 12. Gregs backyard measures 30 m by 30 m. He wants to build a small tennis court that measures 20 m by 15 m. What fraction of Gregs backyard will be used for the tennis court? Remember: Area = base multiplied by height (a=bh) Workings:

_______________ (answer)

Canadian International School MYP Interim Criteria (Gr 7) Math Criterion A Knowledge and Understanding This criterion examines to what extent the student is able to: know and demonstrate understanding of the concepts from the five branches of mathematics (number, algebra, geometry and trigonometry, statistics and probability, and discrete mathematics) use appropriate mathematical concepts and skills to solve problems in both familiar and unfamiliar situations, including those in real-life contexts select and apply general rules correctly to solve problems, including those in real-life contexts.

Achievement Level

DescriptorThe student does not reach a standard described by any of the descriptors below or no assessable work has been submitted

Task Specific DescriptorThe student is unable to complete simple fraction, decimal and percent conversion in familiar contexts. The student is unable to complete simple mathematical problems involving percent of a quantity in familiar contexts. The student attempts to make deductions when calculating simple fraction, decimal and percent conversion in familiar contexts. The student attempts to make deductions when attempting simple percent of a quantity calculations in familiar contexts. The student sometimes makes appropriate deductions when calculating simple and increasingly complex fraction, decimal and percent conversion in familiar contexts. The student sometimes makes appropriate deductions when attempting simple and increasingly complex percent of a quantity calculations in familiar contexts.

0

1-2

The student attempts to make deductions when attempting simple problems in familiar contexts.

3-4

The student sometimes makes appropriate deductions when attempting simple and increasingly complex problems in familiar contexts.

Achievement Level

DescriptorThe student usually makes appropriate deductions when attempting challenging problems in familiar contexts.

Task Specific DescriptorThe student usually makes appropriate deductions when attempting challenging fraction, decimal and percent conversion in familiar context. The student usually makes appropriate deductions when attempting challenging percent of a quantity calculations in familiar contexts. The student consistently makes appropriate deductions when attempting challenging fraction, decimal and percent conversion in a variety of familiar contexts. The student consistently makes appropriate deductions when attempting challenging percent of a quantity calculations in a variety of familiar contexts.

5-6

7-8

The student consistently makes appropriate deductions when attempting challenging problems in a variety of familiar contexts.