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
26 + 10 = ______
46 + 10 = ______
78 + 20 = ______
24 + 20 = ______
7 × 10 = ______
9 × 10 = ______
35 − 10 = ______
67 − 10 = ______
84 + 20 = ______
42 + 10 = ______
14 + 20 = ______
39 + 20 = ______
74 − 10 = ______
76 − 10 = ______
34 + 20 = ______
4 × 10 = ______
25 − 10 = ______
96 − 10 = ______
71 + 10 = ______
36 − 10 = ______
