Week 09 · Add and subtract to 1000
Tuesday
Subtract hundreds, tens and ones
// Hundreds with hundreds, tens with tens, ones with ones
⏱ about 15 min
Tuesday: Subtract hundreds, tens and ones
Rosie has a bag of 375 flower seeds.
She plants 142 seeds by the pond.
"Hooray!" says Rosie. "How many seeds are left in my bag?"
Bennie sits down beside her.
"We can take away one place at a time," he says.
"Ones first, then tens, then hundreds."
Learn it: take away each place
This is 375. We take away 142.
Ones: 5 take away 2 is 3 ones.
Tens: 7 tens take away 4 tens is 3 tens.
Hundreds: 3 hundreds take away 1 hundred is 2 hundreds.
So 375 take away 142 is 233.
Check it! 233 plus 142 is 375. The numbers match.
FIND THE DIFFERENCE
- Read the question.
- Tap your answer.
586 - 243 = ?
479 - 156 = ?
865 - 432 = ?
698 - 275 = ?
Take away hundreds and tens
Taking away whole hundreds only changes the hundreds digit.
TAKE AWAY TENS AND HUNDREDS
- Read the question.
- Tap your answer.
500 - 200 = ?
740 - 30 = ?
960 - 400 = ?
385 - 60 = ?
PUT THE STEPS IN ORDER
- Bennie starts with the ones.
- Tap the steps in order.
11st
22nd
33rd
44th
Subtract one place at a time.
| Number sentence | True or false? |
|---|---|
| 800 - 300 = 500 | ? |
| 657 - 321 = 336 | ? |
| 948 - 125 = 813 | ? |
WHY THIS EXERCISE948 take away 125 is 823, not 813.
STORY PROBLEMS
- Read the question.
- Tap your answer.
Bennie has 258 stones. He gives 135 to Rosie. How many are left?
There are 469 leaves on the path. The wind blows 250 away. How many stay?
142 + ? = 375
Try it
Count out 25 small things, like buttons or blocks.
Take away 12 of them.
How many are left? Count to check.
Take away 12 of them.
How many are left? Count to check.
Word Spot: upon, us, river
Here are new sight words.
Look at each word. Say it. Spell it.
Upon: U-P-O-N.
Us: U-S.
River: R-I-V-E-R.
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.
Once ___ a time, there was a seed.
The sun gives ___ light.
The ___ flows to the sea.
Well done! Tomorrow we make a new ten when we add.