Multiply big whole numbers with the standard algorithm.
Multiply Multi-Digit Numbers teaches fifth graders the standard algorithm for multiplying 3-digit and 4-digit numbers by 2-digit numbers, with estimation to check each answer. It's the fluent multiplication grade 5 curricula expect.
Math course · Grade 5
Multiply Multi-Digit Numbers · Learning goals
Use the standard algorithm to multiply 3-digit and 4-digit numbers by 2-digit numbers, and estimate to check.
Why it matters
Fluent multi-digit multiplication with the standard algorithm is a key fifth grade benchmark.
Estimating first catches mistakes and teaches kids to judge whether an answer makes sense.
Calculating costs for a class trip or seats in a stadium needs big multiplication.
Inside Multiply Multi-Digit Numbers
A short read-aloud lesson first, then hands-on games and a quiz to lock it in.
Step 1 · Lesson
A short read-aloud lesson in 3 steps, with pictures and worked examples.
Step 2 · Game
Ones first, then tens, then add. (6 problems)
Step 3 · Game
Big numbers, same steps! (6 problems)
Step 4 · Game
Round, then multiply. (4 problems)
Step 5 · Game
Multiply to solve. (5 problems)
Lesson preview
This is the real lesson text your child hears, read aloud by a friendly voice.
Multiply by the ones digit first, then by the tens digit, then add the two rows.
123 × 12: 123 × 2 = 246, and 123 × 10 = 1,230. Add them: 1,476.
Estimate to check: 123 × 12 is about 120 × 10 = 1,200. 1,476 is reasonable!
For parents
Learning sticks best when kids use it in real life. Here are simple ideas from this course.
Plan a pretend party: 24 guests and each party bag costs 135 cents. Your child estimates, then works out the exact total.
Practice
Real questions from Multiply Multi-Digit Numbers. Try them with your child, then tap to see the answer.
Question 1
6468
Question 2
34500
Question 3
24000
The full course has 21 questions with instant feedback, stars and rewards. Create a free account to play them all.
Multiply Multi-Digit Numbers · Questions from parents
Multiply Multi-Digit Numbers is a grade 5 math course for kids ages 10–11. That is Year 6 maths in the UK and Year 5 in Australia. It also works well for review in the next grade, or as a challenge for a confident younger learner.
Use the standard algorithm to multiply 3-digit and 4-digit numbers by 2-digit numbers, and estimate to check. Along the way they practice: 3-Digit × 2-Digit; 4-Digit × 2-Digit; Estimate First; Multiplication Stories.
About 10 minutes in total, split into 4 short levels. Most kids finish it over two or three sessions. Progress is saved, so they can stop any time and pick up where they left off.
Yes. Multiply Multi-Digit Numbers is one of the first 2 courses in Grade 5 Math. Create a free parent account and your child can start right away.
No. Every lesson has a friendly read-aloud voice, questions are read aloud too, and the pictures help kids follow along. Confident readers can turn the voice off.
Yes. SkillBloom is built for homeschooling families. Kids work through lessons, games and quizzes on their own, and the parent dashboard shows what they finished and which skills need more practice. It works on phones, tablets and laptops.
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