🔢 3rd grade Math: how to help at home

What each unit covers

1. 🔢Numbers to 100,000

   Reading and writing whole numbers up to 100 000, the value of each digit, comparing and ordering them, and adding or taking away 10, 100, 1,000 or 10,000.

2. 🎯Round & Count

   Rounding numbers to the nearest ten or hundred, counting forward and back by 50s, 100s and 200s, and comparing and ordering numbers up to 1000.

3. ➕Add & Subtract

   Adding and subtracting 2- and 3-digit numbers by place value, number-line jumps and counting up, plus estimating by rounding to the nearest hundred.

4. 🪜Two-Step Stories

   Word problems that take two steps with any of the four operations, choosing an equation with a letter for the unknown, and checking an answer by estimating.

5. ✖️Multiplication

   Understanding multiplication as equal groups, arrays, repeated addition and skip counting. Easier sets use 2s, 5s and 10s; stretch sets go beyond 5 × 5.

6. 🔟Times Tens

   Multiplying a one-digit number by a multiple of ten (like 6 × 40) using a basic fact and place value.

7. ➗Division

   Understanding division as sharing fairly and as making equal groups, and using multiplication facts to divide (3 × 4 = 12, so 12 ÷ 3 = 4).

8. 📈Patterns & Equations

   Extending increasing and decreasing patterns, describing pattern rules in words and tables, and solving one-step equations like ☐ + 8 = 23.

9. 🍕Fractions

   Naming fractions of a shape, a set and a number line, knowing what the top and bottom numbers mean, and comparing fractions by the size of their parts.

10. 📐Halves & Fourths of an Inch

    Measuring lengths to the nearest half and quarter inch, then reading the measurements from a table like a line plot.

11. 📐Area & Perimeter

    Finding the perimeter (distance around) of rectangles and triangles, finding a missing side, and measuring area in square centimeters and square meters.

12. 🔷Sorting Polygons

    Practices naming polygons by their number of sides and sorting them as regular (all sides and angles equal) or irregular.

13. 🧊3D Objects

    Naming 3D objects, counting their faces, edges and vertices, and thinking about how they are built from flat faces or from straws and clay.

14. ⏰Time

    Telling time on an analog clock, working out start and end times, and knowing how seconds, minutes, hours, days, weeks, months and years relate.

15. 📏Measuring

    Measuring with centimeters and meters, grams and kilograms, milliliters and liters: choosing sensible units, estimating, comparing and solving measurement problems.

16. 📊Scaled Graphs

    Reading picture graphs and bar graphs where each picture or step stands for 2, 5 or 10, answering how many more and how many in all, and choosing questions a survey can answer.

17. 💵Coins & Bills

    Your child finds the value of a mix of US coins and bills, writes it with the dollar sign and decimal point, and finds change.

18. 🧾Money Choices

    Personal financial literacy: your child connects skills and work to income, sees how scarcity changes prices, weighs planned and unplanned spending, learns what credit is and who pays it back, and makes a simple savings plan.