Place Value
Write 842 in expanded form.
800+40+2
Use mental math to solve 7+53
60
Use mental math to solve 70-20
50
Round 98 to the nearest ten
100
How many TOTAL tens are in the number 715?
71
Use mental math to solve 16+24
40
Use mental math to solve 88-14
74
Round 142 to the nearest hundred
100
How many TOTAL tens are in the number 270?
27
Solve 456+323
779
Solve 929-578
351
Estimate the sum of 350 and 210 by rounding to the nearest hundred.
600
Show how to break apart 816 into hundreds, tens, and ones.
800+10+6
What addition problem can you use to check the answer for 215-10=205?
205+10=215
What subtraction problem can you use to check the answer for 183+45=228?
228-45=183
Estimate the difference of 668-432 by rounding to the nearest ten.
240