Activities! A. answer the following: 1. From the sum of 12.63 and 27.924, subtract 57.787. 2. Add together as decimal 87 tenths, 58 hundredths, and 36 thousandths. 3. When 8.45 is taken away from a number, the answer is 4.496. Find the number. 4. Find the difference between 8.45 and 3.456. 5. Subtract the sum of 3.45 and 8.9 from 15.36. 6. Subtract 35 tenths from 846 hundredths. B. Solve the following problems. 1. Mother bought meters of ribbon. After she had used 5.45m to make more ribbons, she had 2.1m left. How many meters of ribbons did she have at first? C. Find the sum of the following. 1.4.56 + 9.9 = 2. 10.58 +200.2 = 3. 5.64+10.48+4.36= 4, 2.84+9.8= 5. 45.24+19.8= 6. 21.54+20.01= 7. 69.47+30.01= 8. 7.56 + 3.89= 9. 8.67 + 45.8= 10, 67.9+12.78=