SubjectNest · Year 3 maths · Make it fit, then check
MODEL mass — complete words
The illustrative horizontal scale has marks 0,50,100,150,200,250,300,350,400,450,500 g; labels every 100 g. Arrow points at 150 g. Empty tray 90 g; tray plus counters 310 g; counters 310 − 90 = 220 g. Inverse 90 + 220 = 310 g. All are supplied readings, not performed weighing. Adult checks stable suitable real scale/units/increments/zero or tare. No body weighing. Colour is decorative. Original CC BY 4.0.