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 = ______
59 + 20 = ______
14 + 10 = ______
26 + 10 = ______
12 + 20 = ______
35 + 20 = ______
66 + 20 = ______
79 − 10 = ______
7 × 10 = ______
30 − 10 = ______
27 + 10 = ______
61 + 20 = ______
6 × 10 = ______
1 × 10 = ______
49 − 10 = ______
75 + 10 = ______
76 + 20 = ______
29 − 10 = ______
92 − 10 = ______
8 × 10 = ______
