Question

this is the first question
a) 6540+5390
b) 4689 + 758
c) 6823 +3576
d) 4600 + 3250
e) 6502 +845
f) 775 +6750
g) 876 +412
h) 4550 + 450
2. Estimate all the sums of Q1 by rounding both 4-digit numbers and 3-digit number
to the nearest 100. In each, say which estimate--that of Q1 or Q2, is closer
plZzz help ​

Answer 1

1.

1. 11930
2. 5,447
3. 10399
4. 7850
5. 7347
6. 7525
7. 1288
8. 5000

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Answer 2

Answer:

a)6500+5400 = 11900

b)4700 + 800 = 5500

c)6800+3600 = 10400

d)4600+3300 = 7900

e)6500+800 = 7300

f)800 + 6800 = 7600

g)900 + 400 = 1300

h)4600+500 = 5100

Step - by - step explanation :

Check that which is the nearest hundred in each number . Now you will have doubt that the numbers starting with 5 will be rounded off to which tens , hundreds, thousands and so on ,right ? The numbers starting with 5 will be rounded off to next tens, hundreds ,thousands and so on . Example: Round off the number '550' to the nearest hundreds.

Solution:

550 's nearest hundred = 600

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