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In this lesson, we will learn how to add two tens numbers with or without using base ten blocks.
Q1:
Find the two numbers from 10, 20, 60, and 0 which add up to 30.
Q2:
Which of the following numbers add up to 60?
Q3:
Complete the following: 4 + 3 = , 4 + 3 = t e n s t e n s , 4 0 + 3 0 = .
Q4:
What is the missing number?
+ 8 0 = 1 0 0
Q5:
Find the sum.
Hint: Add the ones and then add the tens.
Q6:
Find the number that when added to 20 gives 90.
Q7:
Nehal has 20 beads. She wants to add on 10 more. How many will she have altogether?
Q8:
Write the missing number: 1 0 + = 5 0 .
Q9:
Charlotte is adding 15, 8, and 28.
She added the ones first.
Add the tens to finish her work and find the total.
Q10:
Hint: Add the ones then the tens.
Q11:
Dalia spilled ink on her homework.
Find the covered numbers.
Q12:
How many tens are there altogether?
Q13:
Q14:
Add to find the total.
Hint: Think about tens and ones. Use base ten blocks to help you.
3 + 6 = .
3 0 + 6 0 = .
Q15:
Q16:
Hint: Think about what happens when there are more than 10 ones.
Q17:
Hint: Add the ones then the tens. What do you do if you have more than 10 ones?
Q18:
7 + 2 = .
7 0 + 2 0 = .
Q19:
Mona is adding tens.
Find the missing numbers.
3 tens plus 4 tens is tens.
3 0 + 4 0 = .
Q20:
Hint: Add the ones then the tens. What happens when there are more than 10 ones?
Q21:
Ramy is using base ten blocks to help him add 9 to 34.
He adds the ones first. There are 13 ones.
Pick the model that shows what he should do.
Q22:
Fares spilt ink on his homework.
Help him find the covered numbers.
Q23:
Pick a model that shows the sum.
Q24:
Q25:
Look at how Dalia adds numbers.
