Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
2 × 10 = ______
43 + 10 = ______
48 − 10 = ______
50 + 20 = ______
24 + 10 = ______
38 + 10 = ______
28 − 10 = ______
88 + 20 = ______
41 + 20 = ______
74 + 10 = ______
33 − 10 = ______
79 + 10 = ______
54 + 10 = ______
19 + 20 = ______
54 + 20 = ______
51 − 10 = ______
53 − 10 = ______
80 − 10 = ______
93 − 10 = ______
64 + 20 = ______
