Thursday
Thursday: The cup puzzle
Chris the Coyote tips his feathered hat and opens his satchel.
"One warm evening, Bruce filled a jug with 6.3 liters of water," he says.
"He poured it into small cups that each hold 0.7 liter."
"Every friend on the trail got a cup, and not a drop was left."
"Then Bennie shared 4.8 kilograms of apples into 4 baskets, the same in each."
Chris smiles. "So how many cups did Bruce fill?"
"And how many kilograms went in each basket? Let us find out together."
Learn it: divide a decimal by a whole number
4.8 is 48 tenths.
48 tenths ÷ 4 = 12 tenths.
12 tenths is 1.2, so each basket has 1.2 kilograms.
Check: 4 × 1.2 = 4.8.
- Read the question.
- Tap your answer.
Learn it: divide by a decimal
6.3 ÷ 0.7 asks: how many groups of 0.7 fit in 6.3?
Think in tenths: 6.3 is 63 tenths, and 0.7 is 7 tenths.
63 tenths ÷ 7 tenths = 9. So Bruce filled 9 cups.
Check: 9 × 0.7 = 6.3.
- Read the question.
- Tap your answer.
- Read the question.
- Tap your answer.
Bruce has 6.3 liters. Each cup holds 0.7 liter. How many cups can he fill?
Bennie shares 4.8 kilograms of apples into 4 baskets. How much is in each basket?- Read the question.
- Tap your answer.
| Sentence | True or false? |
|---|---|
| 6.3 ÷ 0.7 = 9 | ? |
| 4.8 ÷ 4 = 12 | ? |
| 2.4 ÷ 0.3 = 8 | ? |
| 0.84 ÷ 2 = 0.42 | ? |
Fill a 1 liter bottle with water, using the cup.
Count how many cups it takes.
Does your count match 1 ÷ 0.25?
What a puzzle! Tomorrow Freddy has a decimal game.