The answers to the second question on page 104 and the third question on page 105 of mathematics in the fourth grade of primary school.

Math of Grade 4 in Primary School, Volume II, Page 104, Question 2.

2. Calculate the following questions as simply as possible.

1.88+2.3+3.7 5. 17- 1.8-3.2

= 1.88+(2.3+3.7) = 5. 17-( 1.8+3.2)

= 1.88+6 =5. 17-5

=7.88 = 0. 17

4.02-3.5+0.98 13.7+0.98+0.02+4.3

=4.02+0.98-3.5 =( 13.7+4.3)+(0.98+0.02)

=5-3.5 = 18+ 1

= 1.5 = 19

Page 105 Question 3

3. Calculate the following questions as simply as possible.

5.6+2.7+4.4 9. 14- 1.43-4.57

=5.6+4.4+2.7 = 9. 14-( 1.43+4.57)

= 10+2.7 = 9. 14-6

= 12.7 = 3. 14

9.5+4.85-6. 13 77+2.7+2.3+25

= 14.35-6. 13 =(77+25)+(2.3+2.7)

=8.22 = 102+5

= 107

10.75+0.4-9.86 5 1.27-8.66- 1.34

= 1 1. 15-9.86 =5 1.27-(8.66+ 1.34)

= 1.29 =5 1.27- 10

=4 1.27

I have a math book in the second volume of Grade Four.