Question

date 10 - 6 - 25
e. 7 m = ______ cm
f. 19 m = ______ cm
g. ______ m = 2,400 cm
h. 90 m = ______ cm
d. 7 m 45 cm = ______ cm
e. 67 m 7 cm = ______ cm
f. 204 m 89 cm = ______ cm
b. 2 m - 54 cm
d. express your answer in the smaller unit: 800 m 35 cm - 154 m 49 cm
f. 231 km 811 m + 485 km 829 m
ents in terms of a smaller unit; subtraction word problems involving
97

Explanation:

Step1: Recall conversion factor

We know that 1 m = 100 cm.

Step2: Solve e

For 7 m, we multiply by 100: $7\times100 = 700$ cm.

Step3: Solve f

For 19 m, $19\times100=1900$ cm.

Step4: Solve g

To convert 2400 cm to m, we divide by 100: $2400\div100 = 24$ m.

Step5: Solve h

For 90 m, $90\times100 = 9000$ cm.

Step6: Solve d in first - set

For 7 m 45 cm, 7 m is $7\times100=700$ cm, then add 45 cm, so $700 + 45=745$ cm.

Step7: Solve e in first - set

For 67 m 7 cm, 67 m is $67\times100 = 6700$ cm, then add 7 cm, so $6700+7 = 6707$ cm.

Step8: Solve f in first - set

For 204 m 89 cm, 204 m is $204\times100=20400$ cm, then add 89 cm, so $20400 + 89=20489$ cm.

Step9: Solve b

First convert 2 m to 200 cm, then $200 - 54=146$ cm.

Step10: Solve d in second - set

800 m 35 cm is $800\times100+35 = 80035$ cm, 154 m 49 cm is $154\times100 + 49=15449$ cm. Then $80035-15449 = 64586$ cm.

Step11: Solve f

First convert km to m. 231 km 811 m is $231\times1000+811=231811$ m, 485 km 829 m is $485\times1000+829 = 485829$ m. Then $231811+485829=717640$ m.

Answer:

e. 700
f. 1900
g. 24
h. 9000
d (first - set). 745
e (first - set). 6707
f (first - set). 20489
b. 146
d (second - set). 64586
f. 717640