Question

do these problems in your head. use paper only for the problems that you just cant do in your head. its important to do as many of these problems without paper as you can. do not use a calculator at all. 4 + 98 = 80 + 380 = 80 + 91 = 28,000 + 7,000 = 70,000 + 74,000 = 5.7 + 0.4 = 6.6 + 4.0 = 0.89 + 0.09 = 0.7 + 0.97 = check answers → if you dont know to do the problem, just do your best. we will analyze your answers to give you personalized help.

Explanation:

Step1: Add 4 and 98

$4 + 98 = 102$

Step2: Add 80 and 380

$80 + 380 = 460$

Step3: Add 80 and 91

$80 + 91 = 171$

Step4: Add 28,000 and 7,000

$28000 + 7000 = 35000$

Step5: Add 70,000 and 74,000

$70000 + 74000 = 144000$

Step6: Add 5.7 and 0.4

$5.7 + 0.4 = 6.1$

Step7: Add 6.6 and 4.0

$6.6 + 4.0 = 10.6$

Step8: Add 0.89 and 0.09

$0.89 + 0.09 = 0.98$

Step9: Add 0.7 and 0.97

$0.7 + 0.97 = 1.67$

Answer:

1. $102$
2. $460$
3. $171$
4. $35000$
5. $144000$
6. $6.1$
7. $10.6$
8. $0.98$
9. $1.67$