Find the missing ones or tens digits.
15 + 59 = ⎕4

With the help of the image find the sum.

Tens: 30 + 10 = 40
Ones: 4 + 9 = 13
Sum: 40 + 13 = 53

Find 34 + 49.

***  So, 34 + 49 = 83
 

Find the missing ones or tens digits.
17 + 45 = 6⎕

>>> 17 + 45 = 62.

Find the missing number.

Since, the partial division of a number gives ones same as the digit in the one's place.
>>> 82 -> 80 + 2.

Find the partial sums:

Tens = 30 + 20 = 50
Ones = 5 + 4 = 9

Find the partial sum of the given place value block.

>>> Tens: 10 + 20 = 30
>>> Ones: 5 + 6 = 11

Find the missing number.

24 - 4 = 20

Find the partial sum of the given place value block.

>>> Tens: 30 + 20 = 50
>>> Ones: 7 + 2 = 9

Write missing tens or ones digit. 42 + 3⎕ = 75

Marla walks 23 blocks. The next two days she walks 17 and 12 blocks. How many blocks Marla walk in all?

Write an equation for the sum given below:

When asked about favorite sport, 15 students like to play soccer and 19 students like to play tee-ball. How many students are there in all?

Ted has 18 crayons. Terry has 47 crayons. How many crayons does they have in all?

Ben has 24 stamps. He buys 46 stamps more from a store. How many stamps does he have now?

Wendy collects 32 rocks. His sister collects 29 rocks. How many rocks do they collect in all?