What is the midpoint of 800 and 900?

What is the midpoint of 800 and 900?

What is the midpoint of 800 and 900? Huh? In this lesson you will learn how to find the midpoint between two numbers by using a number line. Lets Review Lets Review Counting by 10s. The pattern stays the same even with bigger numbers. 360 3 300 400 8 20

0 0 3 4 310 330 3 350 370 390 Lets Review Lets Review Counting by 100s. Although the hundreds changed, the thousands stayed the same. 1,80 1 0 2,00 0

0 0 , 6 0 0 0 , 0 2 4 , , 1 0 0 1 1 0 1,10 1,300 0 0 5 , 0

1 1,700 1,900 Lets Review Lets Review I l I I I I 151 152 153 154 150 158 159 I I lI I 157 160 155 156

Benchmark Numbers I l I I I I 110 120 130 140 100180 190 I I 150 160 lI I 170 200 Lets Review Lets Review Reading a Number Line l

l l l l l l l l 10 11 12 13 14 15 16 17 1820 19 l l l l l l l l l 100110 120 130 140 150 160 170 180 200 190

l l 1000 1100 l l l l l l l 1200 1300 1400 1500 1600 1700 1800 1900 2000 A Common Lets

Review Mistake Thinking that the increments on a number line always signify counting by ones. l 300 l l l l l l l l 310 320 330 340 350 360 370 380 390

400 CoreReview Lesson Lets The midpoint marks the middle of the line. What is a midpoint? I lI I I I 410 420 430 440 400 480 490 I I lI

450 460 470 Benchmark Numbers I 500 CoreReview Lesson Lets Find the midpoint of 230 and 240. l 230 I 231 238 I I 232 239

I I 233 I I 234 Midpoint I 235 Il 236 237 240

CoreReview Lesson Lets Do I count by 10s or 100s when finding the midpoint of 800 and 900? I lI I I I 810 820 830 840 800 880 890 I I 850 860 lI I

870 900 In this lesson you have learned how to find the midpoint between two numbers by using a number line. Guided Practice Lets Review What is the midpoint of 700 and 800? I lI I I I 710 720 730 740 700 780 790 I I 750 760

lI I 770 800 Extension Lets ReviewActivities I l I I I I I I lI I 100 200 Using the number line above. Find the midpoint of 100 and 200. Where would 123, 178, and 190 be placed on the number line. Are the numbers above or below the midpoint? Extension

Lets ReviewActivities Use a ruler to draw a number line with the benchmark numbers of 1,000 and 2,000. What are the increments between these numbers? What is the midpoint of 1,000 and 2,000? Quick Quiz Lets Review What is the midpoint of 140 and 150? What is the midpoint of 200 and 300?

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