Week 01 · Round, add and subtract
Friday
Freddy's trail review
// Place value up to 1,000
⏱ about 15 min
Friday: Freddy's trail review
Freddy the Frog hops onto a big lily pad in the middle of the pond.
"Ribbit! Welcome to the trail review game," he calls.
"Each lily pad has a number puzzle on it."
"Round, add or subtract, and then hop to the next pad."
Bennie sits on the bank with his notebook.
"Remember to go one place at a time," he says.
Game 1: Round it
ROUND EACH NUMBER
- Read the question.
- Tap your answer.
Round 583 to the nearest ten.
Round 583 to the nearest hundred.
Round 45 to the nearest ten.Round 950 to the nearest hundred.
Game 2: Add and subtract
FIND THE ANSWER
- Read the question.
- Tap your answer.
238 + 457 = ?
702 - 386 = ?
164 + 529 = ?
815 - 290 = ?
Game 3: Lily pad stories
SOLVE THE STORY
- Read the question.
- Tap your answer.
Freddy hops 265 times in the morning and 318 in the afternoon. How many hops?
There are 400 lily pads. Freddy has visited 156. How many has he not visited?
Freddy counts 289 reeds on one bank and 412 on the other. About how many, to the nearest hundred?
What is the value of the 7 in 742?ORDER FROM LEAST TO GREATEST
- Look at the hundreds digit first, then the tens.
- Tap the numbers from least to greatest.
11st
22nd
33rd
44th
Game 4: True or false?
Check each place. For rounding, 5 or more rounds up.
| Sentence | True or false? |
|---|---|
| 238 + 457 = 695 | ? |
| 702 - 386 = 326 | ? |
| 583 rounds to 600. | ? |
| 45 rounds to 40. | ? |
WHY THIS EXERCISE702 - 386 = 316, and 45 rounds up to 50.
Try it
Hop like Freddy 25 times.
Then hop 18 more times.
Add to find how many hops in all.
Round your answer to the nearest ten.
Then hop 18 more times.
Add to find how many hops in all.
Round your answer to the nearest ten.
On paper, draw Freddy on a lily pad with your favorite number puzzle.
Ribbit! Great review. Tomorrow is a Number Hunt.