What this lesson shows
6 × 7 = 42, so 6 × 7 tens is 42 tens, 420, and 6 × 700 is 4,200.
The worked example
The lesson works this one step by step: 6 × 70. Then your kid tries one like it on paper.
The steps
- Find the fact you know
- Say it in tens
- Say it in hundreds
Helping at home
Find the fact inside first: 6 × 70 holds 6 × 7. Then say the product in the place: 42 tens, or 42 hundreds, and write what that is. Never just add zeros.
If your kid gets stuck
Find the fact inside, then say it in tens or hundreds.
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 3.NBT.A.3
Multiply one-digit whole numbers by multiples of 10 in the range 10-90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations.
Matches standards in 46 statesSee each state's code
- Alabama MA19.3.12
- Alaska 3.NBT.3
- Arizona 3.NBT.A.3
- Arkansas 3.CAR.4
- California 3.NBT.A.3
- Colorado 3.NBT.A.3
- Connecticut 3.NBT.A.3
- Delaware 3.NBT.A.3
- District of Columbia 3.NBT.A.3
- Florida MA.3.NSO.2.3
- Georgia 3.PAR.3.5
- Hawaii 3.NBT.A.3
- Idaho 3.NBT.A.3
- Illinois 3.NBT.A.3
- Iowa 3.NBT.A.3
- Kansas 3.NBT.3
- Kentucky KY.3.NBT.3
- Louisiana 3.NBT.A.3
- Maine 3.NBT.A.3
- Maryland 3.NOS.D.8, 4.NOS.B.4
- Massachusetts 3.NBT.A.3
- Michigan 3.NBT.A.3
- Mississippi 3.NBT.3
- Missouri 3.NBT.A.4
- Montana MT.3.NBT.3
- Nebraska 3.A.1.h
- Nevada 3.NBT.A.3
- New Hampshire 3.NBT.A.3
- New Jersey 3.NBT.A.3
- New Mexico 3.NBT.A.3
- New York NY-3.NBT.3
- North Carolina NC.3.NBT.3
- North Dakota 3.NO.NBT.4
- Ohio 3.NBT.3
- Oregon 3.NBT.A.3
- Pennsylvania CC.2.1.3.B.1
- Rhode Island 3.NBT.A.3
- South Carolina 4.PAFR.1.2
- South Dakota 3.NBT.A.3
- Tennessee 3.NBT.A.3
- Texas 111.6.b.4.B
- Utah 3.NBT.3
- Vermont 3.NBT.A.3
- Washington 3.NBT.A.3
- West Virginia M.3.14
- Wisconsin M.3.NBT.A.3
More in this unit
- Equal groups and arrays
- Groups or how many in each?
- Two kinds of division
- Equal jumps on a number line
- Turn the array
- Facts from facts you know
- Add the parts
- One digit times two digits
- Multiply both parts
- Three factors, any order
- Counting zeros fails
- One array, four facts
- True or false?
- The answer can go first
- The unknown anywhere
- Even or odd?
- The ones digit decides
- Is it a multiple?
- A number is its own multiple
- Patterns from a rule
- Position is not value
- Two-step word problems
- Finish the second step
- One pattern, two ways