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 problems: Step 1: Rounding off numbers. a) Round 138 to the nearest tens. The tens digit is 3. The digit to its right is 8. Since 8 5, we round up the tens digit. 138 ≈ 140 b) Round 4998 to the nearest thousands. The thousands digit is 4. The digit to its right is 9. Since 9 5, we round up the thousands digit. 4998 ≈ 5000 c) Round 4382 to the nearest hundreds. The hundreds digit is 3. The digit to its right is 8. Since 8 5, we round up the hundreds digit. 4382 ≈ 4400 d) Round 482602 to the nearest thousands. The thousands digit is 2. The digit to its right is 6. Since 6 5, we round up the thousands digit. 482602 ≈ 483000 e) Round 998 to the nearest tens. The tens digit is 9. The digit to its right is 8. Since 8 5, we round up the tens digit. This causes a carry-over to the hundreds place. 998 ≈ 1000 f) Round 4769 to the nearest hundreds. The hundreds digit is 7. The digit to its right is 6. Since 6 5, we round up the hundreds digit. 4769 ≈ 4800 Step 2: Operation on whole numbers. a) Add 473442 and 369270. c +473442 \\ +369270 \\ 842712 b) Subtract 7824 from 72608. c -72608 \\ 07824 \\ 64784 What's next?