Week 04 · Missing numbers
Friday
Freddy's mystery game
// Unknowns, turn-arounds and break-aparts
⏱ about 15 min
Friday: Freddy's mystery game
Freddy the Frog hops in with a box of mystery cards.
"Ribbit! Every card hides a number," he says.
"Use a fact you know to find it."
Samantha bounces up and down. "I can turn facts around!"
Lucy adds, "And I can share and make groups."
"Then let us play," says Bennie.
Game 1: Mystery numbers
FIND THE UNKNOWN
- Read the question.
- Tap your answer.
7 × ? = 56
? ÷ 6 = 9
45 ÷ ? = 9
36 = 9 × ?
Game 2: Turn, group and break
PICK THE ANSWER
- Read the question.
- Tap your answer.
5 × 9 = 9 × ?
2 × 6 × 5 = ?
7 × 8 = 7 × 5 + 7 × ?7 × 8 = ?Game 3: Trail stories
SOLVE THE STORY
- Read the question.
- Tap your answer.
Freddy sees 4 logs with 8 turtles on each. How many turtles?Six frogs share 36 lily pads fairly. How many each?
Freddy hops 523 times on Monday and 289 on Tuesday. How many hops?
Round 645 to the nearest ten.
ORDER THE PRODUCTS
- Find each product.
- Tap them from least to greatest.
11st
22nd
33rd
44th
Game 4: True or false?
Find the value of each side.
| Sentence | True or false? |
|---|---|
| 5 × 9 = 9 × 5 | ? |
| 54 ÷ 6 = 10 | ? |
| 7 × 8 = 7 × 5 + 7 × 3 | ? |
| 45 ÷ 5 = 9 | ? |
WHY THIS EXERCISE6 × 9 = 54, so 54 ÷ 6 = 9.
Try it
Ask a grown-up to say a mystery sentence, like 6 × ? = 30.
Hop like Freddy once for each count of 6.
Stop when you reach 30. How many hops?
Hop like Freddy once for each count of 6.
Stop when you reach 30. How many hops?
On paper, make your own mystery card with a ? in it. Write the answer on the back.
Ribbit! You solved every mystery. Tomorrow is a Number Hunt.