Decimals - Adding and Subtracting Wholes and Decimals - Starter

The educational resource for Year 5 students focuses on enhancing their understanding of decimals, specifically in the context of adding and subtracting whole numbers and decimals. A starter activity presents a numerical problem that requires students to combine three hundreds, eight tens, and six ones with eight thousands, eighty-four tens, and five ones, reinforcing place value concepts and addition skills. Another task challenges students to calculate the distance to the city of New Star, which is 3.182 km more than the 15.24 km distance to the city of Sandol, thereby practicing decimal addition and real-world application of mathematics.

Further activities include ordering numbers in ascending order, where students must arrange values from one hundred, one thousand, and one million, alongside specific numerical figures, to gain a better grasp of numerical order and magnitude. Additionally, a number line exercise asks students to place decimals in the correct order and then round them to the nearest whole number, such as rounding 4.9 to 5. These exercises are designed to build fluency in working with decimals and to develop a comprehensive understanding of their relationship to whole numbers, an essential skill for mathematical proficiency at this stage of education.