Who can help me out a few simple operations? Fifth grade decimal addition and subtraction Give it to me right away! Five points if you like

Who can help me out a few simple operations? Fifth grade decimal addition and subtraction Give it to me right away! Five points if you like

34.5 × 8.23-34.5 + 2.77 × 34.519.98 × 37-199.8 × 1.9 + 1998 × 0.82314 × 0.043 + 3.14 × 7.2-31.4 × 0.153.9 × 1.2 + 0.1275 × 4.7 + 15.9 × 257.5 × 23 + 31 × 2.5 answer: 34.5 × 8.23-34.5 + 2.77 × 34.5 = 34.5 * (8.23-1 + 2.77) = 34.5 * 10 = 34519