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
45 + 10 = ______
60 + 20 = ______
14 + 20 = ______
23 + 20 = ______
75 + 10 = ______
68 + 10 = ______
26 + 20 = ______
43 + 10 = ______
39 − 10 = ______
58 − 10 = ______
8 × 10 = ______
90 − 10 = ______
51 − 10 = ______
14 + 10 = ______
33 + 20 = ______
4 × 10 = ______
5 × 10 = ______
72 − 10 = ______
6 × 10 = ______
56 + 10 = ______
