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
9 × 10 = ______
46 + 10 = ______
56 + 10 = ______
78 + 20 = ______
84 − 10 = ______
5 × 10 = ______
14 + 20 = ______
93 − 10 = ______
34 − 10 = ______
76 − 10 = ______
64 − 10 = ______
49 + 10 = ______
67 + 10 = ______
83 + 10 = ______
62 + 10 = ______
42 + 20 = ______
46 − 10 = ______
54 − 10 = ______
70 + 20 = ______
13 + 10 = ______
