4th grade math review

Rounding

100

Round to nearest tenth

83

80

200

Round to the nearest hundred

567

500

300

Round to to the nearest thousand

2,345

2,000

400

Round to the nearest tenth

1,563

1,560

500

Round to the nearest ten thousand

838,926

840,000

Use expanded form to add

100

156+423

   100+50+6 

+ 400+20+3

= 500+70+9

579

200

215+324

Estimate answer

   200+10+5

+ 300+20+4

= 500+30=9

539

500

300

629+416

   600+20+9

+ 400+10+6

=  1000+30+15

1,045

400

Is expanded form and the break apart strategy the same thing?

yes

500

1,234+26 

Then estimate answer

  1000+200+30+4

+ 0     +   0+20+6

= 1000+200+50+10

1,260

1,000

Place value/value

100

Place value of 6 in 

625

hundreds 

200

place value of 4 in 

1,243

tens 

300

What is the value of 5 in 

153,000

50,000

400

What is the place value of 5 in

563,489

hundred thousands

500

What is the value of 9 in 

1,236,987

900

Subtract 3 digit numbers

100

198-123

76

200

943-638

305

300

Can I subtract 498-697

No bigger number should always go first

400

500-325

175

500

352-148

204

Word problems

100

Deion puts together a 500 piece puzzle. He used 387 of the puzzle pieces so far. How many pieces does he have left?

216 pieces

200

Ari read 307 pages of a book in a week and 284 pages the next week. How many pages did he read in total. 

591 pages

300

There were 388 people at the carnival on Friday. On Saturday there were 216 more people at the carnival. How many people were there on Saturday? How many people all together both days?

604 on Saturday 

992 Total

400

Ruben has 340 counters, Callen has 326 counters, Penny has 365 counters. Which two students have more than 700 counters combined?

Ruben and Penny

500

On the floor of a theater, there are 586 seats. In the balcony, there are 175 fewer seats. How many seats are in the theater

997 seats