Addition Within 1000
Fill in the answers to practice addition within 1000.
60 problems · A4 · 1 page
What’s in this worksheet?
These 60 exercises stay within 1000. Combine the two numbers and write their sum. Break numbers into hundreds, tens, and ones. Estimate with round hundreds to check whether the answer is reasonable.
Addition Within 1000
Name: ___________Date: ___________Time: ___________
524+82=
859+70=
415+374=
86+285=
757+237=
489+33=
145+280=
865+33=
500+55=
949+25=
914+63=
833+47=
968+23=
501+240=
867+7=
598+206=
3+234=
300+309=
227+108=
452+56=
968+24=
611+241=
68+906=
128+501=
740+128=
716+54=
700+212=
300+275=
924+9=
841+38=
729+101=
289+431=
731+239=
922+73=
682+310=
288+566=
326+213=
670+55=
404+289=
171+686=
882+102=
942+29=
907+52=
911+36=
266+584=
98+425=
691+294=
260+157=
945+21=
491+376=
806+140=
216+33=
752+219=
162+751=
813+104=
906+34=
448+228=
794+49=
350+349=
46+783=