Week 11 · Add and subtract tens
Friday
Freddy's adding game
// Bigger numbers, tens and ones
⏱ about 15 min
Friday: Freddy's adding game
Freddy the Frog has a pond of number lily pads.
"Ribbit! Add and take away to cross the pond," he says.
"Let us go!"
Game 1: Add the tens
ADD TENS
- Read the question.
- Tap your answer.
20 + 70 = ?
53 + 30 = ?
14 + 60 = ?
Game 2: Add the ones
ADD ONES
- Read the question.
- Tap your answer.
71 + 6 = ?
45 + 9 = ?
88 + 2 = ?
Game 3: Take away tens
TAKE AWAY TENS
- Read the question.
- Tap your answer.
80 - 50 = ?
30 - 20 = ?
90 - 60 = ?
Game 4: True or false?
Check the tens, then the ones.
| Number sentence | True or false? |
|---|---|
| 23 + 40 = 63 | ? |
| 57 + 3 = 50 | ? |
| 70 - 40 = 30 | ? |
| 36 + 10 = 46 | ? |
WHY THIS EXERCISE7 ones and 3 ones make a new ten. So 57 plus 3 is 60.
LILY PADS, LEAST TO GREATEST
- Find the least number first.
- Tap from least to greatest.
11st
22nd
33rd
44th
WHAT NUMBER IS THIS?
- Read the question.
- Tap your answer.
What number is this?
What number is this?Try it
Pick a number from 20 to 50.
Add 10 and say the new number.
Add 10 again. Then take away 20.
Are you back where you started?
Add 10 and say the new number.
Add 10 again. Then take away 20.
Are you back where you started?
Word Spot review
Let us review this week's sight words.
Look at each word. Say it. Spell it.
Them: T-H-E-M.
Then: T-H-E-N.
Think: T-H-I-N-K.
Letters: L-E-T-T-E-R-S.
Mother: M-O-T-H-E-R.
Answer: A-N-S-W-E-R.
Study: S-T-U-D-Y.
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.
FIND THE WORD
- Listen to the word.
- Tap it.
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.
Give ___ some water.
First we plant, ___ we water.
What do you ___?
A, B and C are ___.
Ribbit! Tomorrow is a Number Hunt.