What this lesson shows
Tripling a recipe that uses 2/3 cup of sugar.
The worked example
The lesson works this one step by step: 3 × 2/3. Then your kid tries one like it on paper.
The steps
- Each time is one group
- Draw a cup for each
- Multiply the top
- Answer with cups
Helping at home
Find the groups in the story: each time the recipe is made is one group of the fraction. Draw a cup for each, write the multiplication, and say the answer with its unit.
If your kid gets stuck
Draw a cup for each time.
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.NF.B.4c
Solve word problems involving multiplication of a fraction by a whole number, e.g., by using visual fraction models and equations to represent the problem. For example, if each person at a party will eat 3/8 of a pound of roast beef, and there will be 5 people at the party, how many pounds of roast beef will be needed? Between what two whole numbers does your answer lie?
Matches standards in 47 statesSee each state's code
- Alabama MA19.4.16c
- Alaska 4.NF.4.c
- Arizona 4.NF.B.4.c
- Arkansas 4.CAR.10
- California 4.NF.B.4
- Colorado 4.NF.B.4.a, 4.NF.B.4.b, 4.NF.B.4.c
- Connecticut 4.NF.B.4
- Delaware 4.NF.B.4
- District of Columbia 4.NF.B.4
- Florida MA.4.AR.1.3
- Georgia 5.NR.3.4
- Hawaii 4.NF.B.4
- Idaho 4.NF.B.4.c
- Illinois 4.NF.B.4
- Iowa 4.NF.B.4.c
- Kansas 4.NF.4.c
- Kentucky KY.4.NF.4.a, KY.4.NF.4.b, KY.4.NF.4.c
- Louisiana 4.NF.B.4.c
- Maine 4.NF.B.4c
- Maryland 4.NOS.E.13.d
- Massachusetts 4.NF.B.4.c
- Michigan 4.NF.B.4
- Mississippi 4.NF.4.c
- Missouri 4.NF.B.7, 4.NF.B.8
- Montana MT.4.NF.4.a, MT.4.NF.4.c, 4.D1.9, 4.D2.10, 4.D3.4
- Nebraska 4.N.3.c
- Nevada 4.NF.B.4
- New Hampshire 4.NF.B.4
- New Jersey 4.NF.B.4c
- New Mexico 4.NF.B.4
- New York NY-4.NF.4.c
- North Carolina NC.4.NF.4.b
- North Dakota 4.NO.NF.7
- Ohio 4.NF.4.c
- Oregon 4.NF.B.4
- Pennsylvania CC.2.1.4.C.2
- Rhode Island 4.NF.B.4.c
- South Carolina 4.PAFR.2.3
- South Dakota 4.NF.B.4.c
- Tennessee 4.NF.B.4.c
- Texas 111.7.b.3.I
- Utah 4.NF.4.c
- Vermont 4.NF.B.4
- Virginia 4.CE.3c, 5.CE.2d
- Washington 4.NF.B.4
- West Virginia M.4.15
- Wisconsin M.4.NF.B.4
More in this unit
- Equivalent fractions
- Change both parts, not one
- Comparing with 1/2
- Comparing with a common denominator
- Bigger numbers, not a bigger fraction
- Fractions greater than one
- Breaking a fraction into parts
- Adding and subtracting like fractions
- Why the denominator stays
- Adding mixed numbers
- Subtracting mixed numbers
- Fraction stories, same whole
- A whole number times a fraction
- Multiply only the top
- A fraction of a number
- Simplest form