Saral Expressions

Class 7 Maths · Chapter 2: Arithmetic Expressions · NCERT Ganita Prakash section 2.1

Seekho

13 + 2, 20 − 4, 12 × 5 aur 18 ÷ 3 jaise vaakyaansh arithmetic expressions hain. Har expression ka ek maan (value) hota hai, jis number tak wo pahunchta hai: 13 + 2 ka maan 15, aur hum likhte hain 13 + 2 = 15. Zoya roz school bus par ₹30 kharch karti hai, Monday se Friday: uska hafte ka kharch expression 5 × 30 hai, padho "5 times 30".

5 × 30 = 150

Kai expressions, ek maan: 12 ko 10 + 2, 15 − 3, 3 × 4 ya 24 ÷ 2 likh sakte hain. Aur expressions ki unke maan se tulna kar sakte hain: 10 + 2 > 7 + 1 kyunki 12 > 8; 13 − 2 < 4 × 3 kyunki 11 < 12.

10 + 2 > 7 + 1

Bina hisaab ke tulna: kaunsa zyaada, 1023 + 125 ya 1022 + 128? Socho Kabir ke paas 1023 stickers hain aur 125 aur milte hain; Meher ke paas 1022 hain aur 128 milte hain. Kabir ne 1 zyaada se shuru kiya, par Meher ko 3 zyaada mile, to Meher ke paas 2 zyaada: 1023 + 125 < 1022 + 128.

1023 + 125 < 1022 + 128

Ghataane ke liye khone ka socho: 113 − 25 aur 112 − 24. Pehla 1 zyaada se shuru hota hai par 1 zyaada khota bhi hai, to dono barabar: 113 − 25 = 112 − 24. Bade se shuru = nateeja bada; zyaada ghatana = nateeja chhota.

113 − 25 = 112 − 24

Explore: maan ke kram mein lagao.

1. Expressions ko maan ke badhte kram mein lagao.

Yaad rakho

• 5 × 30 jaise expression ka ek maan hota hai; = expression ko maan se jodta hai.
• Expressions ki tulna unke maan se karo, aksar sirf badlaav dekhkar.

Quick check

Bina hisaab ke tulna karo: 245 + 289 ___ 246 + 285

1. >
2. <
3. =

Socho

Teen alag expressions likho, har ek mein do numbers, jinka maan 24 ho.

Practice

Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.