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
40 + 10 = ______
50 − 10 = ______
14 + 10 = ______
62 + 20 = ______
26 + 20 = ______
71 − 10 = ______
7 × 10 = ______
91 − 10 = ______
26 − 10 = ______
6 × 10 = ______
48 − 10 = ______
22 + 10 = ______
39 + 10 = ______
43 + 20 = ______
8 × 10 = ______
43 − 10 = ______
12 + 10 = ______
64 − 10 = ______
79 − 10 = ______
5 × 10 = ______
