LET'S REVISE
1) Andy purchased few items from Dubai Mall, cost these items are as
follows :Apples – Dhs 80.10, pair of
Shoes – Dhs 123.70, Mixed fruit Jam 23.30 , Kellog’s corn flakes – 22.75
Prepare a bill to show the amount paid by him
Dubai Mall
Name:___________
Date:________ Bill NO 23543
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S.no
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Description
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No of items
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Total
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2) 23 is added to 86. From the result, 54 is subtracted. What
number will remain?
a) 31 b) 32 c) 55 d) 163
3)Amy, Lusy, Kiran counted the story books
they had.
Amy had 230books,Lusy had 250books.Amy
and Lucy together has 10 books more than these two. How many books she has now?
4) Jane says When
two numbers are added, the sum is the same regardless of the order of the
addends.Is she correct? What is your opinion and explain
your answer.
5) 5 tens 4 ones = 4 tens
_______ ones.
7 tens 5 ones = ________
tens 15 ones
Decrease 490 by 60
______________
Deduct 345 from 645 ______________
Estimation
1)
ReplyDeleteDubai Mall
Bill NO 23543
Apples – Dhs 80.10
pair of Shoes – Dhs 123.70
Mixed fruit Jam . Dhs 23.30 Kellog’s corn. Dhs 22.75
amount paid by him =249.85
2) 55
4)yes, Jane is correct.
When we add two or more whole numbers, their sum is the same regardless of the order of the addends. The sum of both 2 + 4 and 4 + 2 is 6. That means, we can add whole numbers in any order.
This comment has been removed by the author.
ReplyDelete1)700+300=1,000
ReplyDelete2)200-40=160
3)500-10=490
4) 60+ 80=140
5) 70+ 900=970
6) 400- 30=370
7) 60-20=40
8) 100+ 800=900
9) 90+100=190
10) 700- 30=670
11) 600-300=30
12) 20+80=100
1).
ReplyDeleteCost of apples - Dhs. 80.10
Cost of shoes - Dhs. 123.70
Cost of fruit jam - Dhs. 23.30
Cost of corn flakes - Dhs. 22.75
Total cost - Dhs. 249.85
2). 55
3). 260 books
4). Yes, Jane is right. Consider 100+10 = 10+100 = 110. Thus, while adding whole numbers, changing the order of addends will not change the sum.
5). 5 tens 4 ones = 4 tens 14 ones.
7 tens 5 ones = 6 tens 15 ones
Decrease 490 by 60 = 430
Deduct 345 from 645 = 300
1. DUBAI MALL
ReplyDelete1.Apples – Dhs 80.10
2.pair of Shoes – Dhs 123.70
3.Mixed fruit Jam . Dhs 23.30 4.Kellog’s corn. Dhs 22.75
amount paid by him =AED249.85
2. C. 55
4. yes, Jane is correct.
When we add two or more numbers, their sum is the same regardless of the order of the addends. The sum of both 1+ 2and 2+ 1 is 4.
This is called order property of addition.
5.
5tens 4 ones = 4 tens 14 ones.
7 tens 5 ones = 6 tens 15 ones
Decrease 490 by 60 = 430
Deduct 345 from 645 = 300
FRONT END ESTIMATION
ReplyDelete1.700+300=1000
2.300-40=260
3.500-20=480
4.70+90=160
5.70+900=970
6.500-40=460
7.70-20=50
8.200+900=1100
9.90+100=190
10.700-40=660
11.700-400=300
12.30+80=110
Kundan3A
1.Dubai-mall
ReplyDeleteName:Aishwarya
Date:2-11-2019. Bill No:23543
S.No. Description. Amount
1. Apples. Dh.80.10
2. Pair of shoes. Dh.123.70
3. Mixed fruit jam. Dh.23.30
4. Kellogg’s corn flakes. Dh.22.75
Total. AED249.85
Q2.Ans.(C) 55
Q3.I have doubt on this question
Q4. Yes Jane is correct .the order of the addends can be changed but the sum remains same..For example if we add 21+23 =44 then if change the order into 23+21=44 then also the answer is same.
Q5.5tens 4ones=4tens 14ones
7tens5ones=6tens 15 ones
Decrease490by60=430
Deduct345 from 645=300