Մաթեմատիկա դասարանում 06.10.2020

Վարժ.1 ա)

800-230=570

570+540=1010

1010+800=1810

5000-1810=3190

3190-1010=2180

2180-540=1640

700-220=480

480+460=940

900+700=1600

5000-1600=3400

3400-900=2500

2500-460=2040

Վարժ. 2

Գ) 12+19=31մմ

Բ) 31-24=7մմ

(840+200)-280-80=840

550-(370-400:20)=200

31-(7+12)=12

2×10000+13×100+8×10=21380

Leave a Reply

Fill in your details below or click an icon to log in:

Gravatar
WordPress.com Logo

You are commenting using your WordPress.com account. ( Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. ( Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. ( Log Out /  Change )

Cancel

Connecting to %s