Reshebnik A.ershova V.v.goloborodko K-4 Umnozhenie Drobei 6 | Klass Resheniia

1×15×3=115the fraction with numerator 1 cross 1 and denominator 5 cross 3 end-fraction equals 1 over 15 end-fraction Convert to improper fractions first:

3×32×2=94=214the fraction with numerator 3 cross 3 and denominator 2 cross 2 end-fraction equals nine-fourths equals 2 and one-fourth 1×15×3=115the fraction with numerator 1 cross 1 and

(12)2×113open paren one-half close paren squared cross 1 and one-third : 15 and 10 by 5):

Following the rule, perform multiplication before addition/subtraction. 1×15×3=115the fraction with numerator 1 cross 1 and

5×21×1=10 kmthe fraction with numerator 5 cross 2 and denominator 1 cross 1 end-fraction equals 10 km 1a: 157715 over 77 end-fraction 1b: 1151 over 15 end-fraction 1c: 2: 13one-third 3: Multiplying Mixed Numbers - Math Antics Extras

2110×1514=21×1510×1421 over 10 end-fraction cross 15 over 14 end-fraction equals the fraction with numerator 21 cross 15 and denominator 10 cross 14 end-fraction Simplify (21 and 14 by 7; 15 and 10 by 5):