In the shop

 

Shop assistant: Hi there. Do you need any help?Aren: Hi. Er … I really like these trainers. How much are they?Shop assistant: Oh … they’re 5000 drams.Aren: OK. Do you have them in a 8?Shop assistant: I’ll have a look for you.Aren: Thanks.Shop assistant: Oh … what colour would you like?Aren: blue, please.Shop assistant: OK, just a moment, please. (The assistant goes to look for the trainers that Sam wants to try on.) We’ve got a 8 in green, but not in blue.Aren: Oh … do you have size 7  in blue?Shop assistant: Yeah, sure. Do you want to try them?Aren: Yes, please. (The assistant gets Sam the trainers. Sam tries them on.)Shop assistant: How are they?Aren: I like them, but they’re a bit too small.Shop assistant: Do you want to try the  green ones in your size?Aren: Mmm, no thanks. I don’t like the green ones too much.Shop assistant: Ah, OK. I’m sorry about that.Aren: Don’t worry … Thanks anyw ay. Bye.Shop assistant: Thanks a lot. Bye.

Մաթեմատիկա 235,

235․Կիռառելով գումարման տեղափոխական և զուդորթական  օրենքները՝ հաշվեք առավել հարմար եղանակով։

ա)64+18+36=118

64+36=100

100+18=118

բ)393+8+92+107=600

92+8=100

107+393=500

500+100=600

գ)276+9+24+91=400

91+9=100

276+24=300

300+100=400

դ)1035 + 49 + 456 + 101 =1641

49 + 101=150

1035 + 456 = 1491

150 + 1491 = 1641

ե) 654 + 17 + 346 + 250 + 750 = 2017

250 + 750=1000

654 +  346 = 1000

1000 + 1000 + 17 = 2017

զ) 2059 + 2311 + 441 + 689 + 14 = 5514

2059 + 441 = 2500

2311 + 689 = 3000

2500 + 3000 + 14 = 5514