Tens and compound numbers 21–100Forming compound numbers like 'thirty-four' and recognizing multiples of ten up to 100.Related learning areasEnglish VocabularyRelated conceptsAdverbs and expressions of frequencyCardinal numbers 1–20City vacationsClassroom languageColorsCommon adverbsComes afterCardinal numbers 1–20QuestionsAll questions in this subjectStart learningStart free practice