High School

Round each number to the underlined digit:

2,378
6,924
3,967
8,712
9,876

Find each product:
6 x 3 = 18
7 x 6 = 42
8 x 4 = 32
3 x 9 = 27
4 x 2 = 8
9 x 9 = 81
6 x 5 = 30

Find the sum:
6,787 + 2,598 = 9,385

Fill in the question mark for each:
3 x ? = 24
2 x 9 = 36

Answer :

Let's answer the question step by step.

  1. Rounding Numbers

When a number is rounded to the underlined digit, we need to look at the digit immediately to the right of it to decide whether to round up or stay the same.

  • 2,378: Suppose the hundreds digit '3' is underlined. The digit to the right is '7', which is 5 or more, so we round up to 2,400.
  • 6,924: Suppose the hundreds digit '9' is underlined. The number to the right is '2', which is less than 5, so we round to 6,900.
  • 3,967: Suppose the hundreds digit '9' is underlined. The number to the right is '6', which is 5 or more, so we round up to 4,000.
  • 8,712: Suppose the hundreds digit '7' is underlined. The number to the right is '1', which is less than 5, so we round to 8,700.
  • 9,876: Suppose the hundreds digit '8' is underlined. The number to the right is '7', which is 5 or more, so we round up to 9,900.

  1. Finding Each Product

We need to calculate each multiplication result:

  • [tex]6 \times 3 = 18[/tex]
  • [tex]7 \times 6 = 42[/tex]
  • [tex]8 \times 4 = 32[/tex]
  • [tex]3 \times 9 = 27[/tex]
  • [tex]4 \times 2 = 8[/tex]
  • [tex]9 \times 9 = 81[/tex]
  • [tex]6 \times 5 = 30[/tex]

  1. Finding the Sum

Now, let's find the sum of two numbers:

  • [tex]6,787 + 2,598 = 9,385[/tex]

  1. Fill in the Question Mark

To find the missing numbers for the equations:

  • [tex]3 \times ? = 24[/tex]: We need to find a number that when multiplied by 3 equals 24. The answer is 8 because [tex]3 \times 8 = 24[/tex].
  • [tex]? \times 9 = 36[/tex]: We need to find a number that when multiplied by 9 equals 36. The answer is 4 because [tex]4 \times 9 = 36[/tex].

I hope this step-by-step explanation helps you with your rounding, multiplication, and equations!

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