積せき算さん

noun, noun or participle which takes 'suru', transitive verb

adding up; cumulative addition; totaling

Refers to adding values together, often over time or across units, to obtain a cumulative total.

• 観かん測そく所じょごとの雨う量りょうを積せき算さんして、総そう雨う量りょうを求もとめた。

  We added up the rainfall at each observation station to find the total rainfall.

• 毎まい日にちの売うり上あげを積せき算さんすると、月げつ末まつには大おおきな金きん額がくになる。

  When you add up the daily sales, they become a large amount by the end of the month.

noun, noun or participle which takes 'suru', transitive verb

integration

Technical use for integrating or accumulating a quantity mathematically or in engineering contexts; in pure calculus, 積分 is usually the more standard learner-facing word.

• 電でん力りょくを時じ間かんで積せき算さんすると、電でん力りょく量りょうが求もとめられる。

  If you integrate power over time, you can obtain the amount of electric energy.

noun, noun or participle which takes 'suru', transitive verb

cost estimate; quantity survey; estimating quantities and costs

Used especially in construction, civil engineering, and contracting for estimating project costs by calculating material quantities, labor, unit prices, and related items.

• 設せっ計けい図ずを基もとに工こう事じ費ひを積せき算さんする。

  Estimate the construction cost based on the design drawings.

• 積せき算さん担たん当とう者しゃが材ざい料りょうの数すう量りょうを拾ひろい、見み積つもり書しょを作さく成せいした。

  The quantity surveyor measured the material quantities and prepared an estimate.