Know how many small units fit in one big one, like 16 ounces in a pound. Then multiply by that number: 9 lb = 9 × 16 = 144 oz.
convertchange to a different unit
ouncea small weight: 16 make a pound
incha small length: 12 make a foot
millilitera tiny amount: 1,000 make a liter
Watch for: Using the wrong number, like 10 inches in a foot or 100 ounces in a pound. Dividing instead of multiplying when changing to a smaller unit. An answer smaller than the start, when a smaller unit needs more of them.
At home: Measure a table in feet, then in inches, and check that feet × 12 matches. Try a bag of flour in pounds and ounces too.
Sample sheet and answer key
Luna's Space Adventure
Grade 4 · Converting units · 4.MD.A.1
NameDate
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
Bigger unit to smaller unit
Multiply by how many small units fit in one big one.
9 km =m5 L =mL6 yd =ft4 lb =oz2 kg =g6 m =cm7 ft =in5 hr =min
Make a table
How many mL in 1 to 4 L?
1 L =
2 L =
3 L =
4 L =
Story time
1
Luna's rope is 6 feet long. How many inches is that?
inches
2
Orion's rope is 5 feet long. How many inches is that?
inches
Sheet
Luna's Space Adventure
Grade 4 · Converting units · 4.MD.A.1
Answer key
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
Bigger unit to smaller unit
Multiply by how many small units fit in one big one.
9 km =9000m5 L =5000mL6 yd =18ft4 lb =64oz2 kg =2000g6 m =600cm7 ft =84in5 hr =300min
Make a table
How many mL in 1 to 4 L?
1 L =1000 mL
2 L =2000 mL
3 L =3000 mL
4 L =4000 mL
Story time
1
Luna's rope is 6 feet long. How many inches is that?
6 × 12 = 72
72inches
2
Orion's rope is 5 feet long. How many inches is that?
5 × 12 = 60
60inches
Answer key
New problems every time, three levels (gentle, core and stretch), themes to pick from, a second page if you want one. Each sheet comes with an answer key and a one-page guide for grown-ups.
