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
68 + 10 = ______
89 − 10 = ______
4 × 10 = ______
40 + 10 = ______
64 + 20 = ______
35 − 10 = ______
9 × 10 = ______
5 × 10 = ______
73 + 20 = ______
99 − 10 = ______
81 − 10 = ______
87 + 10 = ______
46 − 10 = ______
2 × 10 = ______
30 + 20 = ______
41 + 20 = ______
86 + 20 = ______
80 − 10 = ______
58 + 20 = ______
67 + 20 = ______
