What this lesson shows
A digit slides one place left and becomes 10 times as much; one place right, one tenth.
The worked example
The lesson works this one step by step: the 6 in 3,615 and in 6,152. Then your kid tries one like it on paper.
The steps
- Find the place
- Say what it is worth
- Left: 10 times as much
- Right: one tenth as much
Helping at home
Find the digit in each number and name its place. Say what it is worth: "6 hundreds is 600". One place to the left is 10 times as much, because 10 of a place make 1 of the next. One place to the right is one tenth as much.
If your kid gets stuck
Name the place of the digit in each number first.
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 4.NBT.A.1
Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right. For example, recognize that 700 ÷ 70 = 10 by applying concepts of place value and division.
Matches standards in 48 statesSee each state's code
- Alabama MA19.4.6
- Alaska 4.NBT.1
- Arizona 4.NBT.A.1 *
- Arkansas 4.NPV.1
- California 4.NBT.A.1
- Colorado 4.NBT.A.1
- Connecticut 4.NBT.A.1
- Delaware 4.NBT.A.1
- District of Columbia 4.NBT.A.1
- Florida MA.4.NSO.1.1
- Georgia 4.NR.1.2
- Hawaii 4.NBT.A.1
- Idaho 4.NBT.A.1
- Illinois 4.NBT.A.1
- Iowa 4.NBT.A.1
- Kansas 4.NBT.1
- Kentucky KY.4.NBT.1
- Louisiana 4.NBT.A.1
- Maine 4.NBT.A.1
- Maryland 4.NOS.A.2
- Massachusetts 4.NBT.A.1
- Michigan 4.NBT.A.1
- Minnesota 4.1.1.2
- Mississippi 4.NBT.1
- Missouri 4.NBT.A.4
- Montana MT.4.NBT.1, 4.D2.11
- Nebraska 4.N.1.c
- Nevada 4.NBT.A.1
- New Hampshire 4.NBT.A.1
- New Jersey 4.NBT.A.1
- New Mexico 4.NBT.A.1
- New York NY-4.NBT.1
- North Carolina NC.4.NBT.1
- North Dakota 4.NO.NBT.1
- Ohio 4.NBT.1
- Oklahoma 4.N.1.3
- Oregon 4.NBT.A.1
- Pennsylvania CC.2.1.4.B.1
- Rhode Island 4.NBT.A.1
- South Dakota 4.NBT.A.1
- Tennessee 4.NBT.A.1
- Texas 111.5.b.2.B, 111.6.b.2.A
- Utah 4.NBT.1
- Vermont 4.NBT.A.1
- Virginia 3.NS.1b, 4.NS.1c
- Washington 4.NBT.A.1
- West Virginia M.4.6
- Wisconsin M.4.NBT.A.1