More addition and subtraction

Write the sum.

Estimate then Solve: 246 + 553 = ?

• 313
• 800

• 809
• 307

• 301
• 401
• 201
• 299

678

What digit is in the ones place

• 6

• 7

• 8

Choose the correct answer

Estimate then solve:

964-678=_________

• two hundred eighty six

• two hundred eight nine

• Two hundred eighteen six

• Two hundred and eighty

843 + ………. = 1000

• 944

• 267

• 157

• 942

estimate 345

• 355

• 350

• 400

• 346

Estimate 671

• 670

• 600

• 671

• 700

what's the mean of trial and improvement ?

• The method to finding the answers

• Rounding to nearest tens

• Numbers to add to make 10 or 100 or 1000

Find : 300 + ........ = 1000

• 100

• 400

• 600

• 700