Additive associative law: (a+b)+c=a+(b+c)
Multiplicative commutative law: ab=ba
Law of multiplicative association: (ab)c=a(bc)
Multiplication and distribution law: a(b+c)=ab+ac.
6.9+4.8+3. 1 0.456+6.22+3.78 15.89+(6.75-5.89)
4.02+5.4+0.98 5. 17- 1.8-3.2 13.75-(3.75+6.48)
3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6- 1.8- 15.6-7.2
3.82+2.9+0. 18+9. 1 9.6+4.8-3.6 7. 14-0.53-2.47
5.27+2.86-0.66+ 1.63 13.35-4.68+2.65 73.8- 1.64- 13.8-5.36
47.8-7.45+8.8 0.398+0.36+3.64 15.75+3.59-0.59+ 14.25
66.86-8.66- 1.34 0.25× 16.2×4 ( 1.25-0. 125)×8
3.6× 102 3.72×3.5+6.28×3.5 36.8-3.9-6. 1
15.6× 13. 1- 15.6- 15.6×2. 1 4.8×7.8+78×0.52 32+4.9-0.9
4.8× 100. 1 56.5×9.9+56.5 7.09× 10.8-0.8×7.09
25.48-(9.4-0.52) 4.2÷3.5 320÷ 1.25÷8
18.76×9.9+ 18.76 3.52÷2.5÷0.4 3.9-4. 1+6. 1-5.9
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
17.8÷( 1.78×4) 0.49÷ 1.4 1.25×2.5×32 3.65× 10. 1
15.2÷0.25÷4 0.89× 100. 1 146.5-(23+46.5)
3.83×4.56+3.83×5.44 4.36× 12.5×8 9.7×99+9.7
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 0.65× 10 1 3.2×0.25× 12.5
(45.9-32.7)÷8÷0. 125 3. 14×0.68+3 1.4×0.032 5.6÷ 1.25÷0.8÷2.5÷0.4
7.2×0.2+2.4× 1.4 8.9× 1.0 1 7.74×(2.8- 1.3)+ 1.5×2.26
3.9×2.7+3.9×7.3 18- 1.8÷0. 125÷0.8 12.7×9.9+ 1.27
2 1×(9.3-3.7)-5.6 15.02-6.8- 1.02 5.4× 1 1-5.4
2.3× 16+2.3×23+2.3 9.43-(6.28- 1.57) 3.65×4.7-36.5×0.37
46×57+23×86 13.7×0.25-3.7÷4 2.22×9.9+6.66×6.7
10 1×0.87-0.9 1×87 10.7× 16. 1- 15. 1× 10.7 0.79× 199
4.8+8.63+5.2+0.37 5.93+0. 19+2.8 1 1.76+0. 195+3.24
2.35+ 1.7 13+0.287+7.65 1.57+0.245+7.43 6.02+3.6+ 1.98
0. 134+2.66+0.866 1.27+3.9+0.73+ 16. 1 7.5+4.9-6.5
3.07-0.38- 1.62 1.29+3.7+2.7 1+6.3 8-2.45- 1.55
3.25+ 1.79-0.59+ 1.75 23.4-0.8- 13.4-7.2 0.32×403
3.2+0.36+4.8+ 1.64 1.23+3.4-0.23+6.6 0.25×36
12.7-(3.7+0.84) 36.54- 1.76-4.54 0.25×0.73×4
7.6×0.8+0.2×7.6 0.85× 199 0.25×8.5×4
1.28×8.6+0.72×8.6 12.5×0.96×0.8 10.4-9.6×0.35
0.8×(4.3× 1.25) 3. 12+3. 12×99 28.6× 10 1-28.6
0.86× 15.7-0.86× 14.7 2.4× 102 2.3 1× 1.2×0.5
14-7.32-2.68 2.64+8.67+7.36+ 1 1.33 70÷28
(2.5-0.25)×0.4 9. 16× 1.5-0.5×9. 16 3.6-3.6×0.5
63.4÷2.5÷0.4 4.9÷ 1.4 3.9÷( 1.3×5)
(7.7+ 1.54)÷0.7 2.5×2.4 2.7÷45 15÷(0. 15×0.4)
0.35× 1.25×2×0.8 32.4×0.9+0. 1×32.4 15÷0.25
4.5÷ 1.8 4.2÷3.5 930÷0.6÷5