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
71 + 10 = ______
41 + 20 = ______
58 − 10 = ______
28 + 10 = ______
5 × 10 = ______
3 × 10 = ______
74 − 10 = ______
53 − 10 = ______
50 + 10 = ______
26 + 20 = ______
6 × 10 = ______
83 − 10 = ______
93 − 10 = ______
21 − 10 = ______
70 + 20 = ______
97 − 10 = ______
12 + 10 = ______
76 − 10 = ______
13 + 20 = ______
43 + 20 = ______
