What this lesson shows
12.3 ÷ 0.01 asks what times 0.01 makes 12.3: 1,230.
The worked example
The lesson works this one step by step: 12.3 ÷ 0.1. Then your kid tries one like it on paper.
The steps
- Put it in the chart
- Divided by 0.1: one place left
- Divided by 0.01: two places left
Helping at home
Read 12.3 ÷ 0.1 as: what times 0.1 makes 12.3? Times 0.1 moves digits one place right, so the answer has each digit one place left, 123. Divided by 0.01 moves each digit two places left.
If your kid gets stuck
Ask: what times 0.1 makes this number?
Watch it with Lux
With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.
Standards
- Common Core 5.NBT.A.2
Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10. Use whole-number exponents to denote powers of 10.
Matches a standard in all 50 states and DCSee each state's code
- Alabama MA19.5.3a, MA19.5.3b
- Alaska 5.NBT.2
- Arizona 5.NBT.A.1 *, 5.NBT.A.2
- Arkansas 5.NPV.2, 5.CAR.12
- California 5.NBT.A.2
- Colorado 5.NBT.A.2
- Connecticut 5.NBT.A.2
- Delaware 5.NBT.A.2
- District of Columbia 5.NBT.A.2
- Florida MA.5.NSO.1.1, MA.5.NSO.2.5
- Georgia 5.NR.1.2
- Hawaii 5.NBT.A.2
- Idaho 5.NBT.A.2
- Illinois 5.NBT.A.2
- Indiana 5.NS.3
- Iowa 5.NBT.A.2
- Kansas 5.NBT.2
- Kentucky KY.5.NBT.2
- Louisiana 5.NBT.A.2
- Maine 5.NBT.A.2
- Maryland 5.NOS.A.2
- Massachusetts 5.NBT.A.2
- Michigan 5.NBT.A.2
- Minnesota 4.1.1.2
- Mississippi 5.NBT.1, 5.NBT.2
- Missouri 5.NBT.A.3, 5.NBT.A.4
- Montana MT.5.NBT.2, 5.D3.1, 5.D4.3, 5.D4.4
- Nebraska 5.N.1.b, 5.N.1.c
- Nevada 5.NBT.A.2
- New Hampshire 5.NBT.A.2
- New Jersey 5.NBT.A.2
- New Mexico 5.NBT.A.2
- New York NY-5.NBT.2
- North Carolina NC.5.NBT.1.b
- North Dakota 5.NO.NBT.7
- Ohio 5.NBT.2
- Oklahoma 4.N.1.3
- Oregon 5.NBT.A.2
- Pennsylvania CC.2.1.5.B.1
- Rhode Island 5.NBT.A.2
- South Carolina 5.NR.1.2, 5.NR.1.4
- South Dakota 5.NBT.A.2
- Tennessee 5.NBT.A.2
- Texas 111.6.b.4.B
- Utah 5.NBT.2
- Vermont 5.NBT.A.2
- Virginia 4.NS.4a, 4.NS.4d, 5.CE.3c.iii
- Washington 5.NBT.A.2
- West Virginia M.5.5
- Wisconsin M.5.NBT.A.2
- Wyoming 5.NBT.2