Negative-Numbers- Wjec-Eduqas Foundation

Negative numbers

What are the rules for calculations with negative numbers?

• When multiplying and dividing with negative numbers

  • Two numbers with the same sign make a positive

    • 

    • 

  • Two numbers with different signs make a negative

    • 

    • <img alt=”6 cross times open parentheses negative 4 close parentheses equals negative 24″ data-mathml='<math ><semantics><mrow><mn>6</mn><mo>&#215;</mo><mfenced><mrow><mo>-</mo><mn>4</mn></mrow></mfenced><mo>=</mo><mo>-</mo><mn>24</mn></mrow><annotation encoding=”application/vnd.wiris.mtweb-params+json”>{“language”:”en”,”fontFamily”:”Times New Roman”,”fontSize”:”18″,”autoformat”:true}</annotation></semantics></math>’ height=”22″ role=”math” src=”data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20xmlns%3Awrs%3D%22http%3A%2F%2Fwww.wiris.com%2Fxml%2Fmathml-extension%22%20height%3D%2222%22%20width%3D%22113%22%20wrs%3Abaseline%3D%2216%22%3E%3C!–MathML%3A%20%3Cmath%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E6%3C%2Fmn%3E%3Cmo%3E%26%23xD7%3B%3C%2Fmo%3E%3Cmfenced%3E%3Cmrow%3E%3Cmo%3E-%3C%2Fmo%3E%3Cmn%3E4%3C%2Fmn%3E%3C%2Fmrow%3E%3C%2Fmfenced%3E%3Cmo%3E%3D%3C%2Fmo%3E%3Cmo%3E-%3C%2Fmo%3E%3Cmn%3E24%3C%2Fmn%3E%3C%2Fmath%3E–%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%40font-face%7Bfont-family%3A’math14a90a06d7b5c4a8983d0cc6f68’%3Bsrc%3Aurl(data%3Afont%2Ftruetype%3Bcharset%3Dutf-8%3Bbase64%2CAAEAAAAMAIAAAwBAT1MvMi7iBBMAAADMAAAATmNtYXDEvmKUAAABHAAAAERjdnQgDVUNBwAAAWAAAAA6Z2x5ZoPi2VsAAAGcAAABa2hlYWQQC2qxAAADCAAAADZoaGVhCGsXSAAAA0AAAAAkaG10eE2rRkcAAANkAAAAEGxvY2EAHTwYAAADdAAAABRtYXhwBT0FPgAAA4gAAAAgbmFtZaBxlY4AAAOoAAABn3Bvc3QB9wD6AAAFSAAAACBwcmVwa1uragAABWgAAAAUAAADSwGQAAUAAAQABAAAAAAABAAEAAAAAAAAAQEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAgICAAAAAg1UADev96AAAD6ACWAAAAAAACAAEAAQAAABQAAwABAAAAFAAEADAAAAAIAAgAAgAAAD0A1yIS%2F%2F8AAAA9ANciEv%2F%2F%2F8T%2FK93xAAEAAAAAAAAAAAAAAVQDLACAAQAAVgAqAlgCHgEOASwCLABaAYACgACgANQAgAAAAAAAAAArAFUAgACrANUBAAErAAcAAAACAFUAAAMAA6sAAwAHAAAzESERJSERIVUCq%2F2rAgD%2BAAOr%2FFVVAwAAAgCAAOsC1QIVAAMABwBlGAGwCBCwBtSwBhCwBdSwCBCwAdSwARCwANSwBhCwBzywBRCwBDywARCwAjywABCwAzwAsAgQsAbUsAYQsAfUsAcQsAHUsAEQsALUsAYQsAU8sAcQsAQ8sAEQsAA8sAIQsAM8MTATITUhHQEhNYACVf2rAlUBwFXVVVUAAgCAAFUC1QKAAAMABwBGGLABFACxAAATELEACeSxAAETELAEPLEGCPSwAjwwAbEIARMQsQAD9rAHPLEBBfWwBjyyBQcAEPSwAjyxCQPmsQQF9bADPBMzASMRMwEjgFUCAFVV%2FgBVAoD91QIr%2FdUAAQCAAVUC1QGrAAMAMBgBsAQQsQAD9rADPLECB%2FWwATyxBQPmALEAABMQsQAG5bEAARMQsAE8sQMF9bACPBMhFSGAAlX9qwGrVgAAAQAAAAEAANV4zkFfDzz1AAMEAP%2F%2F%2F%2F%2FWOhNz%2F%2F%2F%2F%2F9Y6E3MAAP8gBIADqwAAAAoAAgABAAAAAAABAAAD6P9qAAAXcAAA%2F7YEgAABAAAAAAAAAAAAAAAAAAAABANSAFUDVgCAA1YAgANWAIAAAAAAAAAAKAAAALIAAAEhAAABawABAAAABABeAAUAAAAAAAIAgAQAAAAAAAQAAN4AAAAAAAAAFQECAAAAAAAAAAEAEgAAAAAAAAAAAAIADgASAAAAAAAAAAMAMAAgAAAAAAAAAAQAEgBQAAAAAAAAAAUAFgBiAAAAAAAAAAYACQB4AAAAAAAAAAgAHACBAAEAAAAAAAEAEgAAAAEAAAAAAAIADgASAAEAAAAAAAMAMAAgAAEAAAAAAAQAEgBQAAEAAAAAAAUAFgBiAAEAAAAAAAYACQB4AAEAAAAAAAgAHACBAAMAAQQJAAEAEgAAAAMAAQQJAAIADgASAAMAAQQJAAMAMAAgAAMAAQQ