Addition/Partial Sums
Use partial sums to solve for 516 + 142.
658
What is 86-26?
63
Round to the nearest hundred to estimate.
378+136=
500
What is the missing number.
30+40= 40 + ________
30
Start at 25...What are the next four numbers ?
25, ____, _____, ______, _______
30, 35, 40, 45
Use partial sums to solve for 661 + 127.
788
Subtract 583-365 on a number line.
218
573 + 67 is about...
700, 670 are both reasonable.
What is the missing number?
89 + _________= 89
If you start at 40 and skip count by 10, what number will you reach after counting 6 times?
90
True or false. If you break apart 415 + 583 by place value the result is
400+500, 10+80, 5+3
True. It is broken apart by place value.
Subtract using partial differences.
478-152.
326
Estimate 904- 312 by rounding each number to the nearest hundred.
About 600 is reasonable.
Ms. Shaw drove 116 more miles on Tuesday than on Monday. On Monday, she drove 235 miles. How many miles did she drive on Tuesday?
351
Fill in the missing numbers.
3, 6, ____, ____, 15, ____, 21
The missing numbers are 9, 12, and 18.
Use regrouping to add.
542 + 109.
651
Use regrouping to subtract.
919-284.
635
Solve 382+164+262.
808
Find the value of the unknown number in
? + 635=902
267
Mia is skip counting by 4s. She says:
8, 12, 16, ____, _____, 28.
What two numbers are missing?
20, 24
What is the value of the unknown number?
256 + _____________= 381
125
First find the estimation if rounding to the nearest ten. Then solve for the correct difference.
967-502.
470,465
Solve 180+75+ 238+25.
518
Ms. Shaw's class collected Harry Potter stickers.
The boys collected 568.
The girls collected 325.
What is the total amount they collected?
893
Look at the pattern and fill in the blanks.
7, 14, 21, ____, _____.
60, 55, 50, ____, _____.
28, 35 and 45, 40.