Loading [MathJax]/jax/output/CommonHTML/jax.js

Translate

Saturday, June 24, 2023

Rational numbers part 2

1. Write in standard form:

(a) 12/(240):

12240=12240=120

(b) (19)/362:

19362=19362

2. Using appropriate property find 2/3×3/5+5/2×4/7+3/5×1/6:

23×35+52×47+35×16=25+107+110=1470+10070+770=9370=186140

3. What should be subtracted from the product of 3/7 and 2/5 to get 4/35?

37×25435=635435=235

4. One sixth of the students of a class joined the sports club. Three fifth of these students opted to play table tennis. If 6 students play table tennis, how many students are there in the class?

16×35=110 So 10 students are in the class.

5. Simplify (10/21×(7)/5)(2/3×9/(16))+((4)/15×(6)/16):

1021×7523×916+415×616=1421+38+110=23+38+110=40120+45120+12120=17120

6. Is 4/11 the multiplicative inverse of 3 3/4? Give reasons.

411×154=6044=1511 Since this result is not equal to 1, 4/11 is not the multiplicative inverse of 3 3/4.

No comments:

Post a Comment