This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
Here are the solutions to the rounding problems: 10. Round off to the nearest cm. Draw the arrows on the rulers. Ruler 1 (0 cm to 1 cm): a. 4 mm rounded off is \_\_\_ cm. Step 1: Convert millimeters to centimeters. 4 mm = (4)/(10) cm = 0.4 cm Step 2: Round 0.4 cm to the nearest centimeter. Since the digit in the tenths place (4) is less than 5, round down. 0.4 cm ≈ 0 cm Arrow: Draw an arrow from the 4 mm mark on the ruler pointing towards the 0 cm mark. Answer: 0 cm b. 8 mm rounded off is \_\_\_ cm. Step 1: Convert millimeters to centimeters. 8 mm = (8)/(10) cm = 0.8 cm Step 2: Round 0.8 cm to the nearest centimeter. Since the digit in the tenths place (8) is 5 or greater, round up. 0.8 cm ≈ 1 cm Arrow: Draw an arrow from the 8 mm mark on the ruler pointing towards the 1 cm mark. Answer: 1 cm Ruler 2 (10 cm / 100 mm to 20 cm / 200 mm): a. 187 mm rounded off is \_\_\_ cm. Step 1: Convert millimeters to centimeters. 187 mm = (187)/(10) cm = 18.7 cm Step 2: Round 18.7 cm to the nearest centimeter. Since the digit in the tenths place (7) is 5 or greater, round up. 18.7 cm ≈ 19 cm Arrow: Draw an arrow from the 18.7 cm mark (which is 7 mm past 18 cm) on the ruler pointing towards the 19 cm mark. Answer: 19 cm b. 184 mm rounded off is \_\_\_ cm. Step 1: Convert millimeters to centimeters. 184 mm = (184)/(10) cm = 18.4 cm Step 2: Round 18.4 cm to the nearest centimeter. Since the digit in the tenths place (4) is less than 5, round down. 18.4 cm ≈ 18 cm Arrow: Draw an arrow from the 18.4 cm mark (which is 4 mm past 18 cm) on the ruler pointing towards the 18 cm mark. Answer: 18 cm 11. Round off to the nearest m. Draw the arrows on the rulers. Ruler 1 (6 m to 7 m): a. 650 cm rounded off is \_\_\_ m. Step 1: Convert centimeters to meters. 650 cm = (650)/(100) m = 6.5 m Step 2: Round 6.5 m to the nearest meter. Since the digit in the tenths place (5) is 5 or greater, round up. 6.5 m ≈ 7 m Arrow: Draw an arrow from the 6.5 m mark on the ruler pointing towards the 7 m mark. Answer: 7 m b. 620 cm rounded off is \_\_\_ m. Step 1: Convert centimeters to meters. 620 cm = (620)/(100) m = 6.2 m Step 2: Round 6.2 m to the nearest meter. Since the digit in the tenths place (2) is less than 5, round down. 6.2 m ≈ 6 m Arrow: Draw an arrow from the 6.2 m mark on the ruler pointing towards the 6 m mark. Answer: 6 m 12. Round off to the nearest m. Draw the arrows on the rulers. Ruler 1 (0 m to 1 m / 1000 mm): a. 400 mm rounded off is \_\_\_ m. Step 1: Convert millimeters to meters. 400 mm = (400)/(1000) m = 0.4 m Step 2: Round 0.4 m to the nearest meter. Since the digit in the tenths place (4) is less than 5, round down. 0.4 m ≈ 0 m Arrow: Draw an arrow from the 400 mm mark on the ruler pointing towards the 0 m mark. Answer: 0 m b. 800 mm rounded off is \_\_\_ m. Step 1: Convert millimeters to meters. 800 mm = (800)/(1000) m = 0.8 m Step 2: Round 0.8 m to the nearest meter. Since the digit in the tenths place (8) is 5 or greater, round up. 0.8 m ≈ 1 m Arrow: Draw an arrow from the 800 mm mark on the ruler pointing towards the 1 m mark. Answer: 1 m Ruler 2 (6 m to 7 m / 7000 mm): a. 6300 mm rounded off is \_\_\_ m. Step 1: Convert millimeters to meters. 6300 mm = (6300)/(1000) m = 6.3 m Step 2: Round 6.3 m to the nearest meter. Since the digit in the tenths place (3) is less than 5, round down. 6.3 m ≈ 6 m Arrow: Draw an arrow from the 6300 mm mark on the ruler pointing towards the 6 m mark. Answer: 6 m b. 6900 mm rounded off is \_\_\_ m. Step 1: Convert millimeters to meters. 6900 mm = (6900)/(1000) m = 6.9 m Step 2: Round 6.9 m to the nearest meter. Since the digit in the tenths place (9) is 5 or greater, round up. 6.9 m ≈ 7 m Arrow: Draw an arrow from the 6900 mm mark on the ruler pointing towards the 7 m mark. Answer: 7 m That's 2 down. 3 left today — send the next one.