Rounding
A number greater than 5 can be rounded up 1 more.
true or false
What is true
What is the estimation of 15 + 67?
What is 20 + 70 = 90?
Estimate the difference?
93 - 78?
What is 90 - 80 = 10?
Estimate the product
12 x 67
What is 10 x 70 = 700?
Estimate the quotient
in 17 5 / 12
What is 180 /10 = 18
or 200/10 = 20
A number 4 or less must stay at rest. True or false
What is true
Estimate 314 + 298 + 302
What is 300 + 300 + 300 = 900?
Estimate 6,795 - 2,567
What is 7,000 - 3,000 = 4,000?
Estimate 428 x 79 ?
What is 400 x 80 = 32,000?
Which compatible number will divide the following?
7 293 / 89
7200/90 or 7300/90
What is 7200/90
What is 567, 895 rounded to the nearest ten thousand?
What is 570,000
Tell whether this estimation below is an overestimate or an underestimate in
5678 + 4567 = 10,000
What is an underestimate?
5678 + 4567 =6,000 + 5,000=11,000
Estimate 17,894 - 5,834
What is 18,000 - 6,000 = 12,000?
or
20,000 - 6,000 = 14,000
Estimate 614 x 183
What is 600 x 200 = 120,000?
Estimate the quotient 2,331/37
What is 2400 /40 = 60
Which is greater when rounded?
15 x 35 or 13 X 52
What is 15 x 35 which is 20 X 40 = 800?
13 x 52 = 10 x 50 =500
Estimate 357, 908 + 73,845
What is 400,000 + 70,000 = 470,000
or 360,000 + 70,000 = 430,000
Tell whether the estimate is overestimate or an underestimate.
47,205 - 9,832 = 57,000
What is an overestimate?
47,205 - 9832
47,000 - 10,000= 37,000
Estimate 655 x 38
What is 700 x 40 = 28,000?
Estimate the quotient
15,779 / 509
What is 15,000 /500 = 30
Tell which place value position is the number rounded below.
5,678 to 5,680
What is the tens place?
Because 5,678 was rounded to 5,680
Which is the greater estimation?
812,340 + 745,003 or 921,891 + 234,789
What is 812,340 + 745,005?
800,000 + 700,000=1,500,000
Estimate the difference in
5,690,123 - 3,890,134
What is 6,000,000 - 4,000,000= 2,000,000?
Tell if the product is an underestimate or overestimate?
491 x 32= 20,000
What is overestimation because 500 X 30 =15,000
Estimate the 6,474 /498
What is 6,000/500 = 12