estimating decimals sum , modeling decimal addition

Q1 / Find the result of each of the following. اكتب ناتج الجمع في المستطيل ولا تنسى decimal point 25.13 14.002 1058.83 Q2 hundredths + 9 hundredths =......... tenths. 8 88 80 Q3 + 15.998 = .......... 17.11 16.9 17.011 Q4 / 6+ 3.65 + 4.912 = .......... 13.562 14.562 7.277 Q5 3 + 2.7 ........ 4.3 + 2.1 < = > Q6 / Find the result of each of the following. اكتب ناتج الجمع في المستطيل ولا تنسى decimal point 48.88 21.9 Q7 / Which of the following expressions represents the opposite model ? 2.2+1.4 2.3+1.5 2.03+1.05