1. Round off to nearest ten
Round off to nearest hundred
Round off to nearest thousand
Created By Made Nuryadi
2. 82 is between 80 and
90
Is nearer to 80 than to
90
So, 82 is 80 when
rounded off to nearest
ten
3. Panjang pita B 17 cm
17 terletak antara 10
dan 20
17 lebih dekat ke 20
dibandingkan ke 10
Sehingga 17 ≈ 20
4. Concept:
To round off a number to the nearest Ten,
Untuk membulatkan ke puluhan terdekat
study the digit in the ones place:
Pelajari nilai tempat satuannya
if it is 5 or greater than 5, round up
Jika nilainya sama dengan 5 atau lebih besar dari
5, bulatkan keatas.
if it is smaller than 5, round down
Jika lebih kecil dari 5 bulatkan kebawah
78 ≈ 80
64 ≈ 60
5. Round off each number to the nearest
ten
a.42
b.25
c.97
d.64
e.114
f. 179
g.345
6. Concept:
To round off a number to the
nearest hundred, study the digit
in the tens place:
if it is 5 or greater than 5, round up
if it is smaller than 5, round down
7. 270 is between 200 and 300
It is nearer to 300 than to 200
270 is 300 when round off to the nearest
hundred
8. Using the number line, round off each
number to the nearest hundred
340 _____
375 _____
445 _____
490 _____
9. a) 24 195 is ____when round off to the nearest
hundred
b) 65 250 is ____when round off to the nearest
hundred
c) 68 890 is ____when round off to the nearest
hundred
d) 35 450 is ____when round off to the nearest
hundred
10. Round off each
number to the
nearest hundred
a) 560
b) 992
c) 3560
d) 9890
e) 4770
Round off each
number to the nearest
hundred
a) 449
b) 7940
c) 61236
d) 47960
e) 89950
11. Concept:
To round off a number to the nearest
thousand, study the digit in the
hundreds place:
if it is 5 or greater than 5, round up
if it is smaller than 5, round down
12. The price of a math book is Rp 34.600,- when
rounded off to nearest thousand rupiah. What
could the price of the math book be?
34.600 is between 34.000 and 35.000
It is nearer to 35.000 than to 34.000
34.000 is 35.000 when round off to the nearest
thousand
13. Round off each
number to the
nearest thousand
a) 14 495
b) 79.400
c) 71.500
d) 47.960
e) 89.950
Round off each
number to the
nearest thousand
a) 56.678
b) 45.555
c) 68.780
d) 123.567
e) 245.650
14. 1. Find three numbers when rounded off to the
nearest hundred is equal to if rounded off to the
nearest thousand.
2. There were 3750 visitors at a science exhibition.
Round off the number of visitors to nearest
hundred and to nearest thousand.
15. Round off each number to the nearest
100. then estimate the value off the
following.
a) 1258 + 4108
b) 3630-1215
c) 2998 x 3
16. Let’s find out in shaping math book
activity part 1at page 11-12
LETS HAVE FUN IN MATH
By Mr. Made
