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Let’s Learn!

What are rounding tools?

Goal:

Goal:

thinking monkey

Think About It!

Goal: Choose a tool to help you round.

Caleb cooked 623 pieces of chicken. He wants to round this number to the nearest 10. Let’s use a number line to help him round.

Number line: 620 through 630, with a dot on 623.

Put a dot on 623.

Number line: 620 through 630, with a dot on 623. There is one arrow pointing from 623 to 630 and another pointing from 623 to 620.

Which benchmark number is closest?

Number line: 620 through 630, with a dot on 623. There is an arrow pointing from 623 to 620, and 620 is circled in red.

623 rounded to the nearest 10 is 620!

Caleb has 839 strawberries. He wants to round this number to the nearest 100. Let’s use a thousand chart to help him round.

839

Circle the hundreds place. Underline the tens place.

Thousand Chart: 100's columns are highlighted, and an arrow on top of the chart, pointing left and right to the chart. The number 830 is highlighted in yellow.

839

Find a number with the same hundreds place and tens place.

Thousand Chart: 100's columns are highlighted, and an arrow on top of the chart, pointing left and right to the chart. The number 830 is highlighted in yellow. And, there are two green arrows pointing toward 800 and 900 from 830.

Which benchmark number is closer?

Thousand Chart: 100's columns are highlighted, and an arrow on top of the chart, pointing left and right to the chart. The number 830 is highlighted in yellow. And, there is a green arrow point to 800 from 830.

839 rounded to the nearest 100 is 800!

Caleb has 4,219 lettuce leaves. He wants to round this number to the nearest 1,000. Let’s use a ten-thousand chart to help him round.

4,219

Circle the thousands place. Underline the hundreds place.

Thousand Chart: 100's columns are highlighted, and an arrow on top of the chart, pointing left and right to the chart. The number 4,200 is highlighted in yellow.

4,219

Find a number with the same thousands place and hundreds place.

Thousand Chart: 100's columns are highlighted, and an arrow on top of the chart, pointing left and right to the chart. The number 4,200 is highlighted in yellow. And, there is a green arrow point to 4,000 from 4,200, and another arrow point to 5,000 from 4,200.

Which benchmark number is closer?

Thousand Chart: 100's columns are highlighted, and an arrow on top of the chart, pointing left and right to the chart. The number 4,200 is highlighted in yellow. And, there is a green arrow point to 4,000 from 4,200.

4,219 rounded to the nearest 1,000 is 4,000!