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
23 + 20 = ______
36 + 10 = ______
56 − 10 = ______
20 + 10 = ______
26 + 10 = ______
35 + 20 = ______
60 + 10 = ______
21 + 20 = ______
1 × 10 = ______
13 + 10 = ______
73 + 20 = ______
8 × 10 = ______
93 − 10 = ______
5 × 10 = ______
44 + 20 = ______
84 − 10 = ______
86 − 10 = ______
62 − 10 = ______
75 + 10 = ______
3 × 10 = ______
