Adding & Subtracting

Choose the best way to estimate for 1,236 + 2,409

• 2,000 + 2,000 = 4,000

• 1,300 + 2,400 = 3,700

• 1,200 + 2,400 = 3,600

• 1,000 + 3,000 = 4,000

Edward estimated the sum of 1,837 + 1,465 to be 3,300. To which place did he round?

• Thousands

• Hundreds

• Tens

• Ones

A band made 8,879 copies of an album. They sold 6,788 copies. About how many copies were left?

• About 1,100

• Exactly 2,091

• 3,000

• About 2,000

Marisol recycled 7,342 papers in May and 9,107 in June. About how many papers were recycled?

• About 16,000

• About 1,600

• About 17,000

• About 18,000

Find the sum of

23,197 + 6,079

• 29,276

• 17,118

• 29,167

• 26,000

4,982 - 381

• 4,000

• 4,601

• 1,172

• 5,363

241,692 + 16,701 =

• 224,991

• 408,702

• 258,393

• 257,000

Round the number 342 to the nearest ten

• 200

• 300

• 340

Round the number 2,781 to the nearest hundred

• 2,800

• 2,700

• 2,780

• 3,000

Round the number 5,185 to the nearest thousand

• 5,100

• 5,000

• 4,000

• 5,185