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4th grade · Math · Unit 9 of 15

Fractions

Halves to tenths

What your child practices

Reading and naming fractions from halves to tenths, counting by fractions, comparing them, and seeing 3 × 1/4 as three fourths.

Maine Learning Results learning standard: 4.NF.B.3; 4.NF.B.4 · building fractions from unit fractions and multiplying a fraction by a whole number

How we explain it

Children can open this short lesson before they practice.

  1. Count by fractions like counting by 1s: 1/4, 2/4, 3/4.
  2. The bottom number tells the size of the parts.
  3. Repeated addition is multiplication: 3 groups of 2/5.

Example: Count by fourths: 1/4, 2/4, 3/4, what comes next? The top number grows by 1. 4/4 is one whole. Answer: 4/4

Fractions in Maine

In the Maine Learning Results, this is unit 9 of 15 in 4th grade Math, after Polygons & Perimeter and before Angles & Area.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Maine Department of Education

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Which fraction is equal to 1/2?

    • 2/5
    • 1/5
    • 5/10

  2. Question 2

    What is this repeated addition as a multiplication?

    1/10 + 1/10 + 1/10 + 1/10 + 1/10

    • 5 × 1/10 = 5/10
    • 5 × 1/10 = 1/15
    • 5 × 1/10 = 5/50

  3. Question 3

    What fraction of the shape is shaded?

    • 3/4
    • 2/4
    • 1/4

  4. Question 4

    Count by fifths. What comes next?

    1/5, 2/5, 3/5,

    • 3/6
    • 5/5
    • 4/5

  5. Question 5

    What fraction of the shape is shaded?

    • 2/8
    • 6/8
    • 3/8

  6. Question 6

    In 2/4, what does the 4 tell you?

    • how many wholes there are
    • how many parts are shaded
    • how many equal parts make a whole

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