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
28 + 20 = ______
6 × 10 = ______
92 − 10 = ______
66 + 10 = ______
1 × 10 = ______
9 × 10 = ______
50 + 20 = ______
98 − 10 = ______
74 + 20 = ______
36 − 10 = ______
61 − 10 = ______
8 × 10 = ______
93 − 10 = ______
41 + 20 = ______
51 + 20 = ______
88 + 20 = ______
56 − 10 = ______
27 − 10 = ______
72 − 10 = ______
29 + 20 = ______
