Round Ten
Round Hundred
Addition
Subtraction
Math It
100

Round 46 to the nearest ten. 

50

100

Round 328 to the nearest hundred

300

100

324 + 125 =

449

100

524 - 213 =

311

100

What is a sum?

The answer to an addition problem

200

Round 81 to the nearest ten. 

80

200

Round 764 to the nearest hundred

800

200

487 + 326 =

813

200

836 - 457 =

379

200

What is the difference? 

The answer to a subtraction problem

300

Round 67 to the nearest ten

70

300

Round 243 to the nearest hundred

200

300

648 + 279 =

927

300

236 - 118 =

118

300

What is another name for vertical form?

Standard algorithm 

400

Round 364 to the nearest ten

360

400

Round 678 to the nearest hundred

700

400

739 + 486 =

1,225

400

764 - 528 =

236

400

How many ones equals a ten?

10!

500

Round 789 to the nearest ten

790

500

Round 789 to the nearest hundred

800

500

895 + 768 =

1,663

500

902 - 678 =

224

500

How many tens equals a hundred?

10!

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