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Number Trail Grade 2 / Week 07 / Tuesday
2/6
Week 07 · Add within 100

Tuesday

Make a new ten
// Tens with tens, ones with ones
⏱ about 15 min

Tuesday: Make a new ten

Riley finds 38 shiny stones by the creek.

Bennie finds 25 more stones.

Riley adds the ones. "Eight and five make thirteen!"

He scratches his striped tail. "But I only have room for one digit."

Bennie smiles. "Ten ones can turn into one ten. Let me show you."

Learn it: ten ones make a new ten

Here are 38 and 25.

Base-ten blocks: 3 tens and 8 ones
Base-ten blocks: 2 tens and 5 ones

Add the ones: 8 + 5 = 13.

Thirteen ones is 1 ten and 3 ones.

Trade ten ones for one new ten.

Add the tens: 3 + 2 + 1 = 6 tens.

So 38 + 25 = 63.

Base-ten blocks: 6 tens and 3 ones
MAKE A NEW TEN
  • Read the question.
  • Tap your answer.
38 + 25 = ?
47 + 36 = ?
29 + 29 = ?
56 + 27 = ?

Another way: hop to the next ten

To add 47 + 6, hop 3 to get to 50.

Then hop 3 more to get to 53.

A number line with six hops from 47 to 53
HOP TO THE NEXT TEN
  • Read the question.
  • Tap your answer.
47 + 6 = ?
68 + 5 = ?
85 + 9 = ?
HOW MANY ONES?
  • Read the question.
  • Tap your answer.
7 + 6 ones is how many tens and ones?
9 + 9 ones is how many tens and ones?
SentenceTrue or false?
Ten ones make one ten.?
36 + 46 = 82?
57 + 35 = 102?
WHY THIS EXERCISE57 + 35 is 92. The ones make a new ten.
Try it
Put 18 beans or buttons in a pile.
Add 5 more.
Make a group of ten. How many are left over?
Draw tens and ones to show 38 + 25.

Word Spot: right, sing, group

Here are new sight words.

Look at each word. Say it. Spell it.

Right: R-I-G-H-T.

Sing: S-I-N-G.

Group: G-R-O-U-P.

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.
Turn ___ at the tree.
Let us ___ a song.
Our ___ made a poster.

You made new tens! Tomorrow we add three and four numbers.

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