Math facts by grade · En español

What math facts should a 3rd grader know?

Know all products of two one-digit numbers from memory, and multiply and divide within 100.

By the end of 3rd grade

• Multiply and divide within 100 fluently, and know all products of two one-digit numbers from memory. (3.OA.C.7)
• Add and subtract within 1000 fluently. (3.NBT.A.2)

These come from the Common Core State Standards for Mathematics, which most US states use or have adapted. Your child's school may word them differently.

What that looks like

• From memory: 7 × 8 = 56, 6 × 9 = 54, and the division facts that undo them, like 56 ÷ 8 = 7.
• Strategies while a fact is still new: 7 × 8 as 5 × 8 + 2 × 8 = 40 + 16.
• Within 1000: 365 + 240 = 605, 700 − 260 = 440.

How to practice at home

A few minutes a day works better than a long session once a week.

• 1-minute multiplication test
• 1-minute division test
• Times table tricks
• Multiplication chart
• Multiplication flash cards

Take the 1-minute multiplication test

Common questions

How long should my child practice math facts each day?

A few minutes a day is enough for most kids. Short, regular practice sticks better than a long session once a week.

My child still counts on their fingers. Is that a problem?

Counting is a normal step on the way to knowing facts from memory. Strategies like making a 10 bridge the gap, and a 1-minute test shows which facts are still slow.