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# Unit 31: Numbers and Operations 176-188

3,400 possible mastery points

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Quiz

Unit test

### Learn

### Practice

- Place value blocks within 1,000Get 3 of 4 questions to level up!
- Place value tables within 1,000Get 3 of 4 questions to level up!
- Identify the value of a digit (ones, tens, hundreds)Get 3 of 4 questions to level up!
- Create the largest numberGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Write numbers in number and expanded formGet 3 of 4 questions to level up!
- Write numbers in number and word formGet 3 of 4 questions to level up!
- Write numbers in word and expanded formGet 3 of 4 questions to level up!
- Write numbers in different formsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Practice

- Regroup whole numbersGet 3 of 4 questions to level up!
- Hundreds, tens, and onesGet 3 of 4 questions to level up!

### Practice

- Compare 2-digit numbersGet 5 of 7 questions to level up!
- Compare 3-digit numbersGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Skip-count by 5sGet 5 of 7 questions to level up!
- Skip-count by 10sGet 5 of 7 questions to level up!
- Skip-counting by 100sGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Add within 100 using a number lineGet 3 of 4 questions to level up!
- Add within 100 using place value blocksGet 3 of 4 questions to level up!

### Learn

### Practice

- Break apart 2-digit addition problemsGet 3 of 4 questions to level up!
- Add 2-digit numbers by making tensGet 3 of 4 questions to level up!
- Select strategies for adding within 100Get 3 of 4 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

### Learn

### Practice

- Subtract within 100 using place value blocksGet 3 of 4 questions to level up!
- Subtract within 100 using a number lineGet 3 of 4 questions to level up!

### Practice

- Find the missing number (add and subtract within 100)Get 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Add within 1,000 using place value blocksGet 3 of 4 questions to level up!
- Add on a number lineGet 3 of 4 questions to level up!

### Learn

### Practice

- Add 10s and 100s (no regrouping)Get 3 of 4 questions to level up!
- Add using groups of 10 and 100Get 3 of 4 questions to level up!
- Break apart 3-digit addition problemsGet 3 of 4 questions to level up!
- Select strategies for adding within 1000Get 3 of 4 questions to level up!

Level up on the above skills and collect up to 480 Mastery points

### Learn

### Practice

- Subtract 10s and 100s (no regrouping)Get 5 of 7 questions to level up!
- Subtract within 1,000 using place value blocksGet 3 of 4 questions to level up!
- Subtract on a number lineGet 3 of 4 questions to level up!

### Learn

### Practice

- Adding up to four 2-digit numbersGet 3 of 4 questions to level up!
- Adding up to four 2-digit numbers word problemsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

Level up on all the skills in this unit and collect up to 3400 Mastery points!