Virginia SOL Math / Grade 4 / Computation & Estimation

4.CE.2

Multiply & Divide Whole Numbers

What you'll learn

  • Recall multiplication and division facts through 12 x 12 with automaticity
  • Multiply a two- or three-digit number by a one-digit number
  • Divide with a one-digit divisor, including remainders

Words to know

Factor —
a number being multiplied
Product —
the answer to a multiplication problem
Quotient —
the answer to a division problem
Divisor —
the number you divide by
Remainder —
the amount left over after dividing

Why it matters Multiplication and division let us find totals of equal groups and share amounts fairly, from packing boxes to splitting a bill.

Worked examples

Model ItI do

Find 8 x 12.

Break it apart: 8 x 10 = 80 and 8 x 2 = 16. Add the parts: 80 + 16 = 96. So 8 x 12 = 96.

Try It TogetherWe do

Find 234 x 3.

Multiply each place: 3 x 4 = 12 (write 2, carry 1), 3 x 3 = 9 plus 1 is 10 (write 0, carry 1), 3 x 2 = 6 plus 1 is 7. So 234 x 3 = 702.

Now YouYou do

Divide 47 by 5 and give the quotient and remainder.

Find the largest multiple of 5 that fits in 47, then find what is left over. Check your answer in the back.

Practice

Mastered 0 of 11

Warm-up

Ease in with the basics.

  1. 1.Find 6 x 7.

  2. 2.Find 48 / 6.

  3. 3.Find 23 x 3.

On Level

The core Quick Check from the book.

  1. 1.Find 9 x 11.

  2. 2.Find 144 / 12.

  3. 3.Find 156 x 4.

  4. 4.Find 63 / 4 and give the remainder.

  5. 5.Find the missing factor: 7 x ___ = 84.

Challenge

Stretch your thinking.

  1. 1.Find 275 x 6.

  2. 2.Find 154 / 7 and give the remainder.

  3. 3.There are 8 boxes with 12 crayons each. If they are shared equally among 6 children, how many crayons does each child get?