Everyday Mathematics Grade 4, Unit 2: Multiplication and Geometry
In this unit, your child puts place value to work in multiplication, breaking numbers apart to multiply a multidigit number by a one-digit number and two 2-digit numbers. Alongside that comes geometry: points, lines, rays, and angles, and sorting shapes by their parallel and perpendicular sides. It builds on the place-value work before it, and fractions and decimals follow next.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Unit 2?
- Multiplying numbers like 4 × 326 and 23 × 15 by splitting them into hundreds, tens, and ones and adding the partial products. Learn more about multiplying large numbers by a one-digit number: Multiplying large numbers by a one-digit number · Learn more about multiplying two two-digit numbers
- Drawing and naming points, lines, line segments, rays, and right, acute, and obtuse angles, and spotting parallel and perpendicular lines. Learn more: Spotting lines, rays, angles, and parallel lines
- Sorting flat shapes by their parallel sides, perpendicular sides, and angle sizes, and recognizing right triangles as their own group. Learn more: Sorting shapes by their sides and angles
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
Beads come in bags of 125. Jamal buys 6 bags to make bracelets. How many beads does he get?
- 620
- 750
- 625
How you can help
- Multiply out loud at the store: if one pack holds 24 rolls and you buy 3 packs, ask your child to find 3 × 20 and 3 × 4, then add them to get 72.
- Hunt for parallel and perpendicular lines on a walk or ride, such as sidewalk lines, crosswalk stripes, and the posts and rails of a fence.
- Use the corner of a sheet of paper as a right-angle tester, and have your child check corners around the house and call each angle right, acute, or obtuse.
Where kids can get stuck
- Multiplying only tens by tens and ones by ones, so 64 × 38 skips the 60 × 8 and 4 × 30 parts.
- Calling an angle obtuse because its rays are drawn long, instead of checking how wide the angle opens.
- Deciding a triangle has no right angle because it is turned, so the square corner is not at the bottom.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- partial products
- The smaller answers found by multiplying each part of a number, which are then added together.
- area model
- A rectangle split into parts by place value, used to multiply or divide.
- ray
- Part of a line with one endpoint that goes on forever in one direction.
- line segment
- Part of a line with two endpoints.
- parallel lines
- Lines that stay the same distance apart and never meet.
- perpendicular lines
- Lines that cross or meet to form right angles.
- right angle
- An angle that measures exactly 90 degrees, like the corner of a sheet of paper.
- acute angle
- An angle smaller than a right angle, less than 90 degrees.
- obtuse angle
- An angle wider than a right angle but less than 180 degrees.
Ready to build your child’s confidence with multiplication and geometry?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
Join the club
Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Everyday Mathematics Grade 4 Unit 2 cover?
Everyday Mathematics Grade 4 Unit 2 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.