HBS uses the text Math in Focus as a resource. Clicking on IXL skills will bring you to a list of skills for that chapter.

**Chapter 1: Place Value of Whole Number **

- IXL Skills
*Vocabulary: word form, expanded form, standard form*

**Chapter 2: Estimation and Number Theory **

- IXL Skills
*Vocabulary: factor, greatest common factor, multiple, least common multiple*

**Chapter 3: Whole Number Multiplication and Division **

- IXL Skills
*Vocabulary: product, quotient, remainder, estimate*- Resource: Division Menu of review option

**Chapter 4: Tables and Graphs **

**Chapter 5: Data and Probability **

- IXL Skills
*Vocabulary: average/mean, median, mode, range, outcome, outlier, probability, certain, more likely, less likely, equally likely, impossible, favorable outcome*

**Chapter 6: Fractions and Mixed Numbers **

- IXL Skills
*Vocabulary: numerator, denominator, equivalent fractions, unlike fractions, mixed number, simplest form, improper fractions*

**Chapter 7: Decimals **

- IXL Skills
*Vocabulary: decimal point, tenth, hundredth*- Videos: Graphing tenths, (Khan Academy), Graphing hundredths (Khan Academy), Comparing decimals (Khan Academy), Rounding decimals (Khan Academy), Rounding decimal (LearnZillion), Writing numbers as fractions or decimals (Khan Academy), Converting fractions to decimals (Khan Academy)

**Chapter 8: Adding and Subtracting Decimals **

- IXL Skills
- Video: Add Decimals (LearnZillion), Subtract Decimal (Learn Zillion)

**Chapter 9: Angles**

- IXL Skills
*Vocabulary: ray, vertex, protractor, degree, inner scale, outer scale, acute angle, obtuse angle, straight angle*- Video: Measuring angles (LearnZillion)

**Chapter 10: Perpendicular and Parallel Lines**

- IXL Skills
*Vocabulary: perpendicular, parallel, horizontal, vertical, base*

**Chapter 11: Squares and Rectangles**

- IXL Skills
*Vocabulary: square, rectangle, right angle, parallel*

**Chapter 12: Measurement**

**Chapter 13: Area and ****Perimeter**

- IXL Skills
*Vocabulary: length, width, composite figures*

**Chapter 14: Symmetry**

- IXL Skills
*Vocabulary: symmetry, lines of symmetry, rotation, rotational symmetry, symmetric shapes*

**Chapter 15: Tessellations**