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4/6
Week 09 · Add and subtract to 1000

Thursday

A story about fireflies
// Hundreds with hundreds, tens with tens, ones with ones
⏱ about 15 min

Thursday: A story about fireflies

Chris the Coyote sits on an old log with his storyteller satchel.

"Tonight I will tell you about the firefly meadow," he says.

"There are many, many fireflies in this story."

Rosie and Bennie lean in close to listen.

"Keep your ears ready for numbers," Chris says.

Story: The firefly meadow

One summer night, 352 fireflies glow in the meadow.

Then 128 fireflies fly home to the woods.

"How many still glow?" asks Rosie.

Bennie looks at the ones. "We cannot take 8 from 2."

"So we trade 1 ten for 10 ones," he says.

REMEMBER THE STORY
  • Read the question.
  • Tap your answer.
starHow many fireflies glow at first?
How many fireflies fly home?

Learn it: trade a ten for ones

Base-ten blocks: 3 hundreds, 5 tens and 2 ones

We start with 352. We take away 128.

Ones: 2 is too small. Trade 1 ten for 10 ones.

Now there are 12 ones and 4 tens.

12 take away 8 is 4 ones.

Tens: 4 tens take away 2 tens is 2 tens.

Hundreds: 3 take away 1 is 2 hundreds.

So 352 take away 128 is 224. Fireflies still glow!

Base-ten blocks: 2 hundreds, 2 tens and 4 ones
PUT THE STEPS IN ORDER
  • Chris starts by looking at the ones.
  • Tap the steps in order.
11st
22nd
33rd
44th
SUBTRACT AND REGROUP
  • Read the question.
  • Tap your answer.
463 - 247 = ?
540 - 316 = ?
725 - 382 = ?
800 - 350 = ?
Number sentenceTrue or false?
452 - 128 = 324?
631 - 215 = 426?
900 - 300 = 600?
WHY THIS EXERCISE631 take away 215 is 416, not 426.
STORY PROBLEMS
  • Read the question.
  • Tap your answer.
Chris has 245 feathers. He gives 118 to friends. How many are left?
224 fireflies glow. Then 128 come back. How many glow now?
Try it
Get 3 long paper strips and 12 small paper squares.
Each strip is one ten. Each square is one.
Show 32 with 3 strips and 2 squares.
Take away 8. Trade 1 strip for 10 squares first.
How many are left? Count to check.

Word Spot: hear, without, second

Here are new sight words.

Look at each word. Say it. Spell it.

Hear: H-E-A-R.

Without: W-I-T-H-O-U-T.

Second: S-E-C-O-N-D.

FIND THE WORD
  • Listen to the word.
  • Tap it.
Find the word you hear.
Find the word you hear.
Find the word you hear.
Find the word you hear.
FILL THE GAP
  • Listen to the sentence.
  • Tap the missing word.
I can ___ the birds singing.
Do not cross the street ___ a grown-up.
Who came in ___ place?

What a story! Tomorrow Freddy has a review game.

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