Ontario MPT overview

Ontario MPT: Number: fractions, decimals, percents and ratios

Place value, operations with fractions, decimals and integers, percents, rates and ratios, exponents and square roots, and proportional reasoning from the Grades 3–9 Number strand.

  • 20 questions
  • Topic drill
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Number: fractions, decimals, percents and ratios · Question 1Score 0/0

Which number is between −1/2 and −1/4?

Study reference: The Ontario Curriculum, Grades 1–8: Mathematics (2020) and Grade 9: Mathematics MTH1W (2021), Ch. 1 Number strand — Grades 3–8 strand B, Grade 9 strand B

All 20 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

  1. Which number is between −1/2 and −1/4?

    1. −3/8
    2. 3/8
    3. −1/8
    4. −5/8
  2. Write 0.00045 in scientific notation.

    1. 4.5 × 10⁻³
    2. 45 × 10⁻⁵
    3. 4.5 × 10⁻⁴
    4. 4.5 × 10⁴
  3. Add two fractions with unlike denominators: 2/5 + 3/10.

    1. 5/15
    2. 7/10
    3. 5/10
    4. 1/2
  4. Evaluate the product of powers 2³ × 3².

    1. 36
    2. 216
    3. 72
    4. 12
  5. A recipe uses flour and sugar in the ratio 5 : 2. How much sugar goes with 750 g of flour?

    1. 1 875 g
    2. 300 g
    3. 150 g
    4. 377 g
  6. A class of 35 students has 40% who walk to school. How many students walk?

    1. 14
    2. 21
    3. 4
    4. 40
  7. Which list orders the decimals 0.6, 0.45, 0.405 and 0.5 from least to greatest?

    1. 0.45, 0.405, 0.5, 0.6
    2. 0.6, 0.5, 0.45, 0.405
    3. 0.405, 0.45, 0.5, 0.6
    4. 0.5, 0.6, 0.45, 0.405
  8. A student says 0.3 × 0.2 = 0.6. What is the correct product, and what error did the student make?

    1. 6; the decimal point should be dropped
    2. 0.5; the numbers should be added
    3. 0.06; the decimal places were not counted
    4. 0.6; the answer is already correct
  9. A student evaluates 18 − 6 ÷ 3 and gets 4. What is the correct value?

    1. 2
    2. 8
    3. 16
    4. 4
  10. How many 3/8-cup scoops are in 3/4 of a cup?

    1. 3
    2. 1/2
    3. 2
    4. 9/32
  11. A price rises 20% and then falls 20%. Compared with the original, the final price is:

    1. 20% lower
    2. 4% lower
    3. 4% higher
    4. the same
  12. In the number 4 307.25, what is the value of the digit 7?

    1. 7 hundreds
    2. 7 ones
    3. 7 tenths
    4. 7 tens
  13. The temperature is −7 °C at dawn and rises 12 degrees by noon. What is the noon temperature?

    1. 5 °C
    2. −19 °C
    3. 19 °C
    4. −5 °C
  14. Buses leave every 12 minutes and trains every 18 minutes. Both leave at 8:00. When do they next leave together?

    1. 9:00
    2. 8:54
    3. 8:36
    4. 8:30
  15. Between which two consecutive whole numbers does √50 lie?

    1. 5 and 6
    2. 24 and 26
    3. 7 and 8
    4. 6 and 7
  16. What is the greatest common factor of 48 and 36?

    1. 4
    2. 6
    3. 144
    4. 12
  17. Which percent is equivalent to the fraction 1/8?

    1. 12.5%
    2. 18%
    3. 8%
    4. 1.25%
  18. If 9 notebooks cost $15, how much do 6 notebooks cost at the same price?

    1. $10
    2. $22.50
    3. $12
    4. $9
  19. A student claims 1/3 + 1/4 = 2/7. Which model best shows why this is wrong?

    1. A hundreds chart that shows only the even numbers
    2. A bar graph of the class's favourite fruits
    3. A number line showing 1/3 alone is already more than 2/7
    4. A tally chart of the class's votes for team names
  20. Which is the best estimate of 49 × 21?

    1. 1 000
    2. 70
    3. 10 000
    4. 100

Number: fractions, decimals, percents and ratios: key rules to remember

Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗

Ontario Curriculum, Number strand (Grades 3–8 B; Grade 9 B)

  • Place value and decimals; ordering decimals (more digits does not mean larger).
  • Fractions: equivalent fractions, operations; dividing by a fraction = multiplying by its reciprocal.
  • Percents, fraction–decimal–percent equivalence (1/8 = 0.125 = 12.5 %).
  • Integers and rational numbers on a number line.
  • Powers, square roots (√50 between 7 and 8), scientific notation (first factor 1 ≤ a < 10).
  • Factors and multiples: GCF, LCM.
  • Proportional reasoning: unit rates, ratios, percent change on different bases.
  • Common misconceptions used as distractors: adding numerators and denominators; counting decimal places; additive instead of multiplicative reasoning.

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