Week 09 · Add and subtract to 1000
Wednesday
Add and make a new ten
// Hundreds with hundreds, tens with tens, ones with ones
⏱ about 15 min
Wednesday: Add and make a new ten
Rosie and Bennie gather pinecones under the tall trees.
Rosie finds 247 pinecones. Bennie finds 135.
"Seven ones and five ones make 12 ones," says Rosie.
"That is too many for the ones place!"
Bennie smiles. "Then we trade 10 ones for 1 new ten."
Learn it: regroup the ones
Ones: 7 plus 5 is 12 ones.
Trade 10 ones for 1 ten. Now there are 2 ones left.
Tens: 4 tens, 3 tens and the new ten make 8 tens.
Hundreds: 2 hundreds plus 1 hundred is 3 hundreds.
So 247 plus 135 is 382.
Ten tens make 1 hundred too. We can trade those the same way.
TRADE AND REGROUP
- Read the question.
- Tap your answer.
12 ones is 1 ten and how many ones?
15 ones is 1 ten and how many ones?
13 tens is 1 hundred and how many tens?
How many tens make 1 hundred?
Add and regroup
FIND THE SUM
- Read the question.
- Tap your answer.
358 + 226 = ?
165 + 427 = ?
274 + 153 = ?
486 + 239 = ?
When the ones make 10 or more, trade for a ten.
| Number sentence | True or false? |
|---|---|
| 138 + 145 = 283 | ? |
| 256 + 127 = 373 | ? |
| 190 + 30 = 220 | ? |
WHY THIS EXERCISE256 plus 127 is 383. The new ten was missed.
PUT THE NUMBERS IN ORDER, SMALLEST FIRST
- Compare the hundreds, then the tens.
- Tap the numbers from smallest to biggest.
11st
22nd
33rd
44th
STORY PROBLEMS
- Read the question.
- Tap your answer.
Rosie finds 168 shells. Bennie finds 124 shells. How many shells in all?
The trail has 345 tall trees and 275 small trees. How many trees?
382 ? 328
Try it
Get 15 small things and a cup.
Put 10 of them in the cup. The cup is one ten.
How many tens? How many ones are left over?
Put 10 of them in the cup. The cup is one ten.
How many tens? How many ones are left over?
Draw 12 ones. Circle 10 of them to make a ten.
Word Spot: carry, state, book
Here are new sight words.
Look at each word. Say it. Spell it.
Carry: C-A-R-R-Y.
State: S-T-A-T-E.
Book: B-O-O-K.
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.
Please help me ___ the box.
Our ___ has big lakes.
Open your ___ to page five.
Super trading! Tomorrow Chris tells a story about fireflies.