Decimals & Percents · Divide decimals · 4.3

Divide by tens.

Dividing by a power of ten shifts the decimal point left — one place per zero. 34.5 ÷ 10 = 3.45.

01 / THE IDEA

See it work.

Watch the method

Divide by 10, 100…

34.5 ÷ 10 = 3.45.

1 / 2
34.5÷1034.5 \div 10
1

Count the zeros

÷10 shifts the decimal point 1 place(s) to the left.

34.5÷1034.5 \div 10
2

Shift the point

Move the point left.

=3.45= 3.45
02 / YOUR TURN

Practice until it feels automatic.

Your turn

Work it out.

Type a decimal, e.g. 0.75.

streak 0
best 0
… =
— / WHY IT WORKS

The idea underneath.

Count the zeros

Each zero moves the point one place left; add leading zeros if needed.

Why it works

34.5 → ÷10 → 3.45.

03 / WORKED EXAMPLES

From easy to tricky.

EX 1easy

Divide 6.4 ÷ 10

1

Count the zeros

÷10 shifts the decimal point 1 place(s) to the left. 6.4 ÷ 10

2

Shift the point

Move the point left. = 0.64

EX 2medium

Divide 3.9 ÷ 100

1

Count the zeros

÷100 shifts the decimal point 2 place(s) to the left. 3.9 ÷ 100

2

Shift the point

Move the point left. = 0.039

EX 3hard

Divide 2.5 ÷ 100

1

Count the zeros

÷100 shifts the decimal point 2 place(s) to the left. 2.5 ÷ 100

2

Shift the point

Move the point left. = 0.025

04 / COMMON TRAPS

Where students slip.

Trap

Shifting the wrong way.

Fix

Dividing moves the point left.

Trap

Miscounting the zeros.

Fix

÷100 → two places left.

05 / QUIZ

Test yourself.

The Test

12 problems across three tiers. Auto-graded on submit. Hints and a full walkthrough on every question. Your work is saved on this device — sign in to keep it across devices.

0/12Answered
How to answerType just the value. Formatting won't trip you up — we ignore spaces, capital letters, commas, and subscript style, so t₁ = 5, d = 3 and t1=5,d=3 both count. For a list of numbers, separate them with commas (e.g. 3, 10, 17).
Core

Core (4)

C1

Divide 2.8 ÷ 100

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
C2

Divide 4.9 ÷ 10

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
C3

Divide 3.2 ÷ 100

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
C4

Divide 5.1 ÷ 10

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
Apply

Apply (4)

A1

Divide 1.4 ÷ 100

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
A2

Divide 1.8 ÷ 10

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
A3

Divide 5.6 ÷ 100

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
A4

Divide 2.4 ÷ 10

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
Extension

Extension (4)

E1

Divide 3.1 ÷ 100

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
E2

Divide 3.6 ÷ 10

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
E3

Divide 6.5 ÷ 10

Need a hint?
  • Count the zeros.
  • Move the point that many places left.
E4

Divide 6.8 ÷ 100

Need a hint?
  • Count the zeros.
  • Move the point that many places left.